Bump govuk_app_config from 4.6.0 to 4.6.1

Bumps [govuk_app_config](https://github.com/alphagov/govuk_app_config) from 4.6.0 to 4.6.1.
- [Release notes](https://github.com/alphagov/govuk_app_config/releases)
- [Changelog](https://github.com/alphagov/govuk_app_config/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_app_config@v4.6.0...v4.6.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -107,7 +107,7 @@ GEM
       activesupport (>= 5.0)
     govuk-content-schema-test-helpers (1.6.1)
       json-schema (~> 2.8.0)
-    govuk_app_config (4.6.0)
+    govuk_app_config (4.6.1)
       logstasher (~> 2.1)
       prometheus_exporter (~> 2.0)
       puma (~> 5.6)
@@ -197,7 +197,7 @@ GEM
     phantomjs (2.1.1.0)
     plek (4.0.0)
     progress (3.5.2)
-    prometheus_exporter (2.0.2)
+    prometheus_exporter (2.0.3)
       webrick
     pry (0.13.1)
       coderay (~> 1.1)