Bump puma from 6.3.1 to 6.4.2

Bumps [puma](https://github.com/puma/puma) from 6.3.1 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@v6.3.1...v6.4.2)

---
updated-dependencies:
- dependency-name: puma
  dependency-type: direct:production
...

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

Gemfile.lock

@@ -14,7 +14,7 @@ GEM
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     minitest (5.18.1)
-    nio4r (2.5.9)
+    nio4r (2.7.0)
     overcommit (0.62.0)
       childprocess (>= 0.6.3, < 6)
       iniparse (~> 1.4)
@@ -24,7 +24,7 @@ GEM
       ast (~> 2.4.1)
       racc
     prometheus-client (4.1.0)
-    puma (6.3.1)
+    puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.7.1)
     rainbow (3.1.1)