build(deps): bump the gems group with 1 update

Bumps the gems group with 1 update: [prometheus-client](https://github.com/prometheus/client_ruby).

- [Release notes](https://github.com/prometheus/client_ruby/releases)
- [Changelog](https://github.com/prometheus/client_ruby/blob/main/CHANGELOG.md)
- [Commits](prometheus/client_ruby@v4.2.1...v4.2.2)

---
updated-dependencies:
- dependency-name: prometheus-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gems
...

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

Gemfile.lock

@@ -50,7 +50,7 @@ GEM
     parser (3.2.2.4)
       ast (~> 2.4.1)
       racc
-    prometheus-client (4.2.1)
+    prometheus-client (4.2.2)
     puma (6.4.0)
       nio4r (~> 2.0)
     racc (1.7.1)