Bump psych from 5.2.0 to 5.2.1

Bumps [psych](https://github.com/ruby/psych) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/ruby/psych/releases)
- [Commits](ruby/psych@v5.2.0...v5.2.1)

---
updated-dependencies:
- dependency-name: psych
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -496,7 +496,8 @@ GEM
     plek (5.2.0)
     prometheus_exporter (2.1.1)
       webrick
-    psych (5.2.0)
+    psych (5.2.1)
+      date
       stringio
     public_suffix (6.0.1)
     puma (6.5.0)