build(deps): bump govuk_app_config from 9.23.8 to 9.23.9

Bumps [govuk_app_config](https://github.com/alphagov/govuk_app_config) from 9.23.8 to 9.23.9.
- [Changelog](https://github.com/alphagov/govuk_app_config/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_app_config@v9.23.8...v9.23.9)

---
updated-dependencies:
- dependency-name: govuk_app_config
  dependency-version: 9.23.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile

@@ -13,7 +13,7 @@ gem "gds-api-adapters"
 gem "gds-sso"
 gem "google-api-client"
 gem "googleauth"
-gem "govuk_app_config", "9.23.8"
+gem "govuk_app_config", "9.23.9"
 gem "govuk_publishing_components"
 gem "gretel"
 gem "jbuilder"

Gemfile.lock

@@ -243,7 +243,7 @@ GEM
       multi_json (~> 1.11)
       os (>= 0.9, < 2.0)
       signet (>= 0.16, < 2.a)
-    govuk_app_config (9.23.8)
+    govuk_app_config (9.23.9)
       connection_pool (< 3)
       logstasher (~> 2.1)
       opentelemetry-exporter-otlp (>= 0.25, < 0.34)
@@ -630,7 +630,7 @@ GEM
       tsort (>= 0.2)
       zeitwerk (~> 2.6)
     rainbow (3.1.1)
-    rake (13.3.1)
+    rake (13.4.1)
     rdoc (7.2.0)
       erb
       psych (>= 4.0.0)
@@ -826,7 +826,7 @@ DEPENDENCIES
   gds-sso
   google-api-client
   googleauth
-  govuk_app_config (= 9.23.8)
+  govuk_app_config (= 9.23.9)
   govuk_publishing_components
   govuk_test
   gretel