Build(deps): Bump mini_racer from 0.5.0 to 0.6.0 (#15433)

Bumps [mini_racer](https://github.com/discourse/mini_racer) from 0.5.0 to 0.6.0.
- [Release notes](https://github.com/discourse/mini_racer/releases)
- [Changelog](https://github.com/rubyjs/mini_racer/blob/master/CHANGELOG)
- [Commits](https://github.com/discourse/mini_racer/compare/v0.5.0...v0.6.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -228,7 +228,7 @@ GEM
     method_source (1.0.0)
     mini_mime (1.1.2)
     mini_portile2 (2.6.1)
-    mini_racer (0.5.0)
+    mini_racer (0.6.0)
       libv8-node (~> 16.10.0.0)
     mini_scheduler (0.13.0)
       sidekiq (>= 4.2.3)