Bump pghero from 3.5.0 to 3.6.0

Bumps [pghero](https://github.com/ankane/pghero) from 3.5.0 to 3.6.0.
- [Changelog](https://github.com/ankane/pghero/blob/master/CHANGELOG.md)
- [Commits](ankane/pghero@v3.5.0...v3.6.0)

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

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

Gemfile.lock

@@ -210,8 +210,8 @@ GEM
     pg (1.5.6)
     pg_query (5.1.0)
       google-protobuf (>= 3.22.3)
-    pghero (3.5.0)
-      activerecord (>= 6)
+    pghero (3.6.0)
+      activerecord (>= 6.1)
     popper_js (2.11.8)
     psych (5.1.2)
       stringio