chore(deps): bump github.com/prometheus/alertmanager from 0.31.1 to 0.33.1

[dependabot]

Bumps github.com/prometheus/alertmanager from 0.31.1 to 0.33.1.

Release notes

Sourced from github.com/prometheus/alertmanager's releases.

0.33.1 / 2026-07-04

• [BUGFIX] doc: fix missing notification_reason field in webhook documentation (#5329)
• [BUGFIX] silences: fix silences snapshot missing legacy matchers field. This caused a bug that prevented older alertmanager versions from reading newer snapshots unnecessarily. (#5330)
• [BUGFIX] silence with no matchers should populate an empty array in API response (#5331)

0.33.0 / 2026-06-12

• [CHANGE] The '--enable-feature=auto-gomaxprocs' option has been removed. This flag had no effect since v0.29 and was deprecated in v0.32. It can be safely removed from any startup scripts. #5090, #5251
• [CHANGE] Add group-key-in-metrics feature flag. #5047
• [CHANGE] Move AlertMarker, GroupMarker to marker package. #5047
• [CHANGE] Remove alertmanager_marked_alerts. #5047
• [CHANGE] Remove the following from types package: MemMarker, AlertState*, AlertStatus. #5047
• [FEATURE] Introduce per aggregation group AlertMarkers and drop Global Alert Marker. #5047
• [FEATURE] ui: Add support for silence annotations. #5017
• [FEATURE] api: Add receiver labels and receiver_matchers filter to /api/v2/receivers, /api/v2/alerts, and /api/v2/alerts/groups. #5152
• [FEATURE] eventrecorder: Add structured event recorder behind --enable-feature=event-recorder, with file, webhook, and kafka outputs. #5072, #5246
• [ENHANCEMENT] Add the use_aws_http_client config option to the sns notifier. #5178
• [ENHANCEMENT] template: Add now function to get current time. #5188
• [ENHANCEMENT] docs: Clarify YAML quoting vs matcher token quoting in UTF-8 matchers section. #5264
• [BUGFIX] jira: Allow disabling the resolve transition when resolve_transition is not set. #4821
• [BUGFIX] jira: Include unresolved issues in wont_fix_resolution JQL to prevent duplicate issue creation. #5185
• [BUGFIX] sns: Support the AWS_CA_BUNDLE env variable for the sns notifier. #5178

0.32.2 / 2026-06-05

• [BUGFIX] Fix dispatcher goroutine leaks on destroyed alertgroup swap. #5241

0.32.1 / 2026-04-29

• [BUGFIX] dispatcher: Fix issue with dispatching to a contended route. #5179
• [BUGFIX] ui: Provide prebuilt ui assets in release. #5191
• [ENHANCEMENT] ui: Support building artifacts in containers with Docker or Podman. #5102

0.32.1-rc.0 / 2026-04-27

• [BUGFIX] dispatcher: Fix issue with dispatching to a contended route. #5179
• [BUGFIX] ui: Provide prebuilt ui assets in release. #5191
• [ENHANCEMENT] ui: Support building artifacts in containers with Docker or Podman. #5102

0.32.0 / 2026-04-08

• [CHANGE] go get github.com/prometheus/alertmanager/ui will now fail as compiled UI assets are no longer checked into the repository. Downstream builds that rely on these assets being present in the source tree must now build the UI from source. #5113
• [CHANGE] The '--enable-feature=auto-gomaxprocs' option is deprecated and will be removed in v0.33. This flag currently has no effect and can be safely removed from any startup scripts. #5090
• [CHANGE] Update internal function signatures across multiple packages. This affects any project that integrates Alertmanager code.
• [ENHANCEMENT] Add static asset caching. #5113
• [ENHANCEMENT] Reduce memory allocations through pre-sizing collections and batch allocation. #5020
• [ENHANCEMENT] Replace help with documentation in navigation bar. #4943
• [ENHANCEMENT] docs(ha): Update high availability documentation. #5136
• [ENHANCEMENT] docs: Add auth_secret_file for smtp in document. #5036
• [ENHANCEMENT] docs: Add description for global telegram_bot_token. #5114
• [ENHANCEMENT] docs: Add note about notifier timeouts. #5077
• [ENHANCEMENT] docs: Fix force_implicit_tls config field name. #5030
• [ENHANCEMENT] docs: Link community supported integrations. #4978
• [ENHANCEMENT] docs: Remove duplicate header. #5034
• [ENHANCEMENT] docs: Update mutual tls reference in high availability documentation. #5120

... (truncated)

Changelog

Sourced from github.com/prometheus/alertmanager's changelog.

0.33.1 / 2026-07-04

• [BUGFIX] doc: fix missing notification_reason field in webhook documentation (#5329)
• [BUGFIX] silences: fix silences snapshot missing legacy matchers field. This caused a bug that prevented older alertmanager versions from reading newer snapshots unnecessarily. (#5330)
• [BUGFIX] silence with no matchers should populate an empty array in API response (#5331)

0.32.3 / 2026-07-04

• [BUGFIX] doc: fix missing notification_reason field in webhook documentation (#5329)
• [BUGFIX] silences: fix silences snapshot missing legacy matchers field. This caused a bug that prevented older alertmanager versions from reading newer snapshots unnecessarily. (#5330)
• [BUGFIX] silence with no matchers should populate an empty array in API response (#5331)

0.33.0 / 2026-06-12

• [CHANGE] The '--enable-feature=auto-gomaxprocs' option has been removed. This flag had no effect since v0.29 and was deprecated in v0.32. It can be safely removed from any startup scripts. #5090, #5251
• [CHANGE] Add group-key-in-metrics feature flag. #5047
• [CHANGE] Move AlertMarker, GroupMarker to marker package. #5047
• [CHANGE] Remove alertmanager_marked_alerts. #5047
• [CHANGE] Remove the following from types package: MemMarker, AlertState*, AlertStatus. #5047
• [FEATURE] Introduce per aggregation group AlertMarkers and drop Global Alert Marker. #5047
• [FEATURE] ui: Add support for silence annotations. #5017
• [FEATURE] api: Add receiver labels and receiver_matchers filter to /api/v2/receivers, /api/v2/alerts, and /api/v2/alerts/groups. #5152
• [FEATURE] eventrecorder: Add structured event recorder behind --enable-feature=event-recorder, with file, webhook, and kafka outputs. #5072, #5246
• [ENHANCEMENT] Add the use_aws_http_client config option to the sns notifier. #5178
• [ENHANCEMENT] template: Add now function to get current time. #5188
• [ENHANCEMENT] docs: Clarify YAML quoting vs matcher token quoting in UTF-8 matchers section. #5264
• [BUGFIX] jira: Allow disabling the resolve transition when resolve_transition is not set. #4821
• [BUGFIX] jira: Include unresolved issues in wont_fix_resolution JQL to prevent duplicate issue creation. #5185
• [BUGFIX] sns: Support the AWS_CA_BUNDLE env variable for the sns notifier. #5178

0.32.2 / 2026-06-05

• [BUGFIX] Fix dispatcher goroutine leaks on destroyed alertgroup swap. #5241

0.32.1 / 2026-04-29

• [BUGFIX] dispatcher: Fix issue with dispatching to a contended route. #5179
• [BUGFIX] ui: Provide prebuilt ui assets in release. #5191
• [ENHANCEMENT] ui: Support building artifacts in containers with Docker or Podman. #5102

0.32.0 / 2026-04-08

• [CHANGE] go get github.com/prometheus/alertmanager/ui will now fail as compiled UI assets are no longer checked into the repository. Downstream builds that rely on these assets being present in the source tree must now build the UI from source. #5113
• [CHANGE] The '--enable-feature=auto-gomaxprocs' option is deprecated and will be removed in v0.33. This flag currently has no effect and can be safely removed from any startup scripts. #5090
• [CHANGE] Update internal function signatures across multiple packages. This affects any project that integrates Alertmanager code.
• [ENHANCEMENT] Add static asset caching. #5113
• [ENHANCEMENT] Reduce memory allocations through pre-sizing collections and batch allocation. #5020
• [ENHANCEMENT] Replace help with documentation in navigation bar. #4943
• [ENHANCEMENT] docs(ha): Update high availability documentation. #5136
• [ENHANCEMENT] docs: Add auth_secret_file for smtp in document. #5036

... (truncated)

Commits

• 2c8da51 Cherry pick release 0.33.1 (#5367)
• 5d3ceb5 cherry-pick: bump version in the VERSION file and update date in CHANGELOG (#...
• df22286 prep release v0.33.0 (#5295)
• 364a227 docs: clarify YAML quoting vs matcher token quoting (#5264)
• add91b8 chore: tune coderabbit messages (#5293)
• d51d792 chore: more reorganization of notify.go (#5291)
• 3f5c0d9 fix the release date for 0.32.2 (#5290)
• 9c233dc fix(env): Remove deprecated auto-gomaxprocs flag (#5251)
• 79c1d17 chore: move WaitStage and GossipSettleStage to a separate file (#5287)
• 616c5be chore: move context functions into their own file (#5286)
• Additional commits viewable in compare view

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