Bump prometheus-client from 2.1.0 to 4.2.1

Bumps [prometheus-client](https://github.com/prometheus/client_ruby) from 2.1.0 to 4.2.1.
- [Release notes](https://github.com/prometheus/client_ruby/releases)
- [Changelog](https://github.com/prometheus/client_ruby/blob/main/CHANGELOG.md)
- [Commits](prometheus/client_ruby@v2.1.0...v4.2.1)

---
updated-dependencies:
- dependency-name: prometheus-client
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Gemfile

@@ -8,7 +8,7 @@ gem 'fb-jwt-auth', '~> 0.10.0'
 gem 'kaminari'
 gem 'metadata_presenter', '~> 3.2.1'
 gem 'pg', '>= 0.18', '< 2.0'
-gem 'prometheus-client', '~> 2.1.0'
+gem 'prometheus-client', '~> 4.2.1'
 gem 'puma', '~> 6.3'
 gem 'rails', '~> 7.0.6'
 gem 'sentry-rails', '~> 5.10.0'

Gemfile.lock

@@ -402,7 +402,7 @@ GEM
       racc
     pg (1.5.3)
     plek (5.0.0)
-    prometheus-client (2.1.0)
+    prometheus-client (4.2.1)
     prometheus_exporter (2.0.8)
       webrick
     public_suffix (5.0.3)
@@ -564,7 +564,7 @@ DEPENDENCIES
   kaminari
   metadata_presenter (~> 3.2.1)
   pg (>= 0.18, < 2.0)
-  prometheus-client (~> 2.1.0)
+  prometheus-client (~> 4.2.1)
   puma (~> 6.3)
   rails (~> 7.0.6)
   rspec-rails