Bump puma from 6.4.2 to 6.4.3

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] <[email protected]>

Gemfile.lock

@@ -433,7 +433,7 @@ GEM
       i18n (>= 0.5.0)
       railties (>= 5.0.0)
     public_suffix (5.0.4)
-    puma (6.4.2)
+    puma (6.4.3)
       nio4r (~> 2.0)
     pundit (2.3.1)
       activesupport (>= 3.0.0)