Bump redcarpet from 3.5.1 to 3.6.0

Bumps [redcarpet](https://github.com/vmg/redcarpet) from 3.5.1 to 3.6.0.
- [Release notes](https://github.com/vmg/redcarpet/releases)
- [Changelog](https://github.com/vmg/redcarpet/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vmg/redcarpet/compare/v3.5.1...v3.6.0)

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

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

Gemfile.lock

@@ -369,7 +369,7 @@ GEM
       thor (~> 1.0)
     rainbow (3.1.1)
     rake (13.0.6)
-    redcarpet (3.5.1)
+    redcarpet (3.6.0)
     redis (4.5.1)
     regexp_parser (2.6.1)
     request_store (1.5.1)