fix: ci issues after adding global registry pattern

[Demonsthere]

Related Issue or Design Document

Checklist

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• I have referenced an issue containing the design document if my change introduces a new feature.
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• I have added tests that prove my fix is effective or that my feature works.
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Further comments

[Copilot]

Pull request overview

This PR aims to resolve CI failures introduced after adding a global registry pattern by normalizing BusyBox image references/tags across charts and hack values, and aligning generated docs accordingly.

Changes:

• Switch BusyBox tags from numeric (1 / 1.36) to stable and simplify BusyBox repositories to busybox.
• Update Helm chart READMEs to reflect the new defaults (and bump displayed AppVersion/image tags in some charts).
• Adjust ServiceMonitor relabeling keys in hack values to Prometheus Operator-style camelCase.

Reviewed changes

Copilot reviewed 21 out of 21 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
helm/charts/oathkeeper/values.yaml	Update initContainer BusyBox tag to stable.
helm/charts/oathkeeper/README.md	Reflect BusyBox tag change and update displayed AppVersion/image tag.
helm/charts/kratos/values.yaml	Update test BusyBox tag to stable.
helm/charts/kratos/README.md	Reflect BusyBox tag change in docs.
helm/charts/kratos-selfservice-ui-node/values.yaml	Update test BusyBox tag to stable.
helm/charts/kratos-selfservice-ui-node/README.md	Reflect BusyBox tag change; update displayed image tag.
helm/charts/keto/values.yaml	Update test BusyBox tag to stable.
helm/charts/keto/README.md	Reflect BusyBox tag change in docs.
helm/charts/hydra/values.yaml	Update test BusyBox tag to stable.
helm/charts/hydra/README.md	Reflect BusyBox tag change and update displayed AppVersion/image tag.
helm/charts/example-idp/values.yaml	Update test BusyBox tag to stable.
helm/charts/example-idp/README.md	Reflect BusyBox tag change in docs.
hacks/values/oathkeeper/default.yaml	Normalize BusyBox repository/tag for initContainer and tests.
hacks/values/kratos/default.yaml	Normalize ServiceMonitor relabeling keys and BusyBox repository/tag.
hacks/values/kratos-selfservice-ui-node/default.yaml	Normalize BusyBox repository/tag.
hacks/values/keto/default.yaml	Normalize ServiceMonitor relabeling keys and BusyBox repository/tag.
hacks/values/hydra/existing-service-accounts.yaml	Normalize BusyBox repository/tag.
hacks/values/hydra/default.yaml	Normalize ServiceMonitor relabeling keys and BusyBox repository/tag.
hacks/values/hydra/custom-migration.yaml	Disable watcher in this scenario.
hacks/values/hydra-maester/default.yaml	Normalize ServiceMonitor relabeling keys.
hacks/values/example-idp/default.yaml	Normalize BusyBox repository/tag.

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[Copilot]

Using a floating image tag like stable is mutable and weakens supply-chain guarantees/reproducibility (a future stable could change behavior or break CI unexpectedly). Consider pinning BusyBox to an immutable version (e.g., 1.36.x) or, preferably, to an image digest, while still keeping the repository/registry normalization that this PR introduces.

Suggested change

	tag: stable
	tag: "1.36.1"

[Copilot]

This updates the documented default image.tag to v26.2.0, but the only change shown in helm/charts/kratos-selfservice-ui-node/values.yaml in this PR is the test BusyBox tag. If the chart default image.tag wasn't actually updated, the README is now incorrect. Please regenerate the README from the chart values (helm-docs) after updating the actual default, or revert this README line to match the current values.

Suggested change

	| image.tag | string | `"v26.2.0"` | ORY KRATOS VERSION |
	| image.tag | string | `"v0.13.0-4"` | ORY KRATOS VERSION |