build(deps): bump prometheus-client from 2.1.0 to 4.1.0

Bumps [prometheus-client](https://github.com/prometheus/client_ruby) from 2.1.0 to 4.1.0.
- [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...v4.1.0)

---
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

@@ -8,7 +8,7 @@ gem 'geocoder', '~> 1.8'
 gem 'grape', '~> 1.5'
 gem 'grape_logging', '~> 1.8'
 gem 'grape-swagger', '~> 1.3', '>= 1.3.1'
-gem 'prometheus-client', '~> 2.1'
+gem 'prometheus-client', '~> 4.1'
 gem 'puma', '~> 5.6'
 gem 'rack-cors', '~> 1.1'
 gem 'rake', '~> 13.0'

Gemfile.lock

@@ -48,7 +48,7 @@ GEM
     parallel (1.22.1)
     parser (3.2.0.0)
       ast (~> 2.4.1)
-    prometheus-client (2.1.0)
+    prometheus-client (4.1.0)
     puma (5.6.5)
       nio4r (~> 2.0)
     rack (2.2.6.4)
@@ -90,7 +90,7 @@ DEPENDENCIES
   grape-swagger (~> 1.3, >= 1.3.1)
   grape_logging (~> 1.8)
   minitest (~> 5.14, >= 5.14.2)
-  prometheus-client (~> 2.1)
+  prometheus-client (~> 4.1)
   puma (~> 5.6)
   rack-cors (~> 1.1)
   rack-test (~> 1.1)