Bump prometheus-client from 0.10.0 to 4.2.2

Bumps [prometheus-client](https://github.com/prometheus/client_ruby) from 0.10.0 to 4.2.2.
- [Release notes](https://github.com/prometheus/client_ruby/releases)
- [Changelog](https://github.com/prometheus/client_ruby/blob/main/CHANGELOG.md)
- [Commits](prometheus/client_ruby@v0.10.0...v4.2.2)

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

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

Gemfile

@@ -27,7 +27,7 @@ gem 'statsd-ruby', '~> 1.5.0'
 # prometheus/client_ruby had a massive rewrite in
 # https://github.com/prometheus/client_ruby/pull/95
 # This is the prerelease version of that work
-gem 'prometheus-client', '~> 0.10.0.pre.alpha.1'
+gem 'prometheus-client', '~> 4.2.2'
 
 # Use sentry-raven for sending logs to Sentry via the raven protocol
 gem 'sentry-raven'

Gemfile.lock

@@ -184,7 +184,7 @@ GEM
     parser (3.0.2.0)
       ast (~> 2.4.1)
     phantomjs (2.1.1.0)
-    prometheus-client (0.10.0)
+    prometheus-client (4.2.2)
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -385,7 +385,7 @@ DEPENDENCIES
   logstash-logger
   mini_racer
   multi_json
-  prometheus-client (~> 0.10.0.pre.alpha.1)
+  prometheus-client (~> 4.2.2)
   pry (~> 0.14.2)
   puma
   rack-handlers