Merge pull request #977 from Charcoal-SE/dependabot/bundler/commonmarker-0.23.9

Bump commonmarker from 0.23.7 to 0.23.9

Author: makyen

Gemfile.lock

@@ -134,7 +134,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    commonmarker (0.23.7)
+    commonmarker (0.23.9)
     concurrent-ruby (1.1.10)
     crack (0.4.5)
       rexml