Bump puma_worker_killer from 0.2.0 to 0.3.0

Bumps [puma_worker_killer](https://github.com/schneems/puma_worker_killer) from 0.2.0 to 0.3.0.
- [Release notes](https://github.com/schneems/puma_worker_killer/releases)
- [Changelog](https://github.com/schneems/puma_worker_killer/blob/main/CHANGELOG.md)
- [Commits](zombocom/puma_worker_killer@v0.2.0...v0.3.0)

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

Author: dependabot-preview[bot]

Gemfile.lock

@@ -230,7 +230,7 @@ GEM
     public_suffix (4.0.5)
     puma (4.3.5)
       nio4r (~> 2.0)
-    puma_worker_killer (0.2.0)
+    puma_worker_killer (0.3.0)
       get_process_mem (~> 0.2)
       puma (>= 2.7, < 5)
     pusher-client (0.6.2)