Bump puma from 5.5.2 to 5.6.4

Bumps [puma](https://github.com/puma/puma) from 5.5.2 to 5.6.4.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v5.5.2...v5.6.4)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -675,7 +675,7 @@ GEM
     posix-spawn (0.3.15)
     power_converter (0.1.2)
     public_suffix (4.0.6)
-    puma (5.5.2)
+    puma (5.6.4)
       nio4r (~> 2.0)
     qa (5.6.0)
       activerecord-import