Bump commonmarker from 0.21.2 to 0.23.6

Bumps [commonmarker](https://github.com/gjtorikian/commonmarker) from 0.21.2 to 0.23.6.
- [Release notes](https://github.com/gjtorikian/commonmarker/releases)
- [Changelog](https://github.com/gjtorikian/commonmarker/blob/main/CHANGELOG.md)
- [Commits](gjtorikian/commonmarker@v0.21.2...v0.23.6)

---
updated-dependencies:
- dependency-name: commonmarker
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -92,7 +92,7 @@ GEM
     bulma-rails (0.9.3)
       sassc (~> 2.0)
     byebug (11.1.3)
-    commonmarker (0.23.5)
+    commonmarker (0.23.6)
     concurrent-ruby (1.1.10)
     connection_pool (2.3.0)
     crass (1.0.6)