Bump pghero from 3.3.3 to 3.4.1

Bumps [pghero](https://github.com/ankane/pghero) from 3.3.3 to 3.4.1.
- [Changelog](https://github.com/ankane/pghero/blob/master/CHANGELOG.md)
- [Commits](ankane/pghero@v3.3.3...v3.4.1)

---
updated-dependencies:
- dependency-name: pghero
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -475,7 +475,7 @@ GEM
     pg (1.5.6)
     pg_query (4.2.1)
       google-protobuf (>= 3.22.3)
-    pghero (3.3.3)
+    pghero (3.4.1)
       activerecord (>= 6)
     postmark (1.24.0)
       json