Bump the bundler group group in /ruby-sinatra with 2 updates

Bumps the bundler group group in /ruby-sinatra with 2 updates: [puma](https://github.com/puma/puma) and [rack](https://github.com/rack/rack).


Updates `puma` from 6.0.2 to 6.4.2
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v6.0.2...v6.4.2)

Updates `rack` from 2.2.5 to 2.2.8.1
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.5...v2.2.8.1)

---
updated-dependencies:
- dependency-name: puma
  dependency-type: direct:production
  dependency-group: bundler-security-group
- dependency-name: rack
  dependency-type: indirect
  dependency-group: bundler-security-group
...

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

ruby-sinatra/Gemfile.lock

@@ -3,10 +3,10 @@ GEM
   specs:
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.8)
-    puma (6.0.2)
+    nio4r (2.7.0)
+    puma (6.4.2)
       nio4r (~> 2.0)
-    rack (2.2.5)
+    rack (2.2.8.1)
     rack-protection (3.0.5)
       rack
     ruby2_keywords (0.0.5)