Bump puma from 6.4.2 to 6.4.3 (#1492)

Bumps [puma](https://github.com/puma/puma) from 6.4.2 to 6.4.3.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v6.4.2...v6.4.3)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -312,9 +312,9 @@ GEM
     psych (5.1.2-java)
       jar-dependencies (>= 0.1.7)
     public_suffix (6.0.0)
-    puma (6.4.2)
+    puma (6.4.3)
       nio4r (~> 2.0)
-    puma (6.4.2-java)
+    puma (6.4.3-java)
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.8.0)