Bump commonmarker from 0.23.8 to 0.23.9

Bumps [commonmarker](https://github.com/gjtorikian/commonmarker) from 0.23.8 to 0.23.9.
- [Release notes](https://github.com/gjtorikian/commonmarker/releases)
- [Changelog](https://github.com/gjtorikian/commonmarker/blob/main/CHANGELOG.md)
- [Commits](https://github.com/gjtorikian/commonmarker/compare/v0.23.8...v0.23.9)

---
updated-dependencies:
- dependency-name: commonmarker
  dependency-type: indirect
...

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

Gemfile.lock

@@ -13,7 +13,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.8)
+    commonmarker (0.23.9)
     concurrent-ruby (1.2.2)
     dnsruby (1.61.9)
       simpleidn (~> 0.1)
@@ -22,12 +22,14 @@ GEM
       http_parser.rb (~> 0)
     ethon (0.16.0)
       ffi (>= 1.15.0)
+    eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
     execjs (2.8.1)
     faraday (2.7.4)
       faraday-net_http (>= 2.0, < 3.1)
       ruby2_keywords (>= 0.0.4)
     faraday-net_http (3.0.2)
+    ffi (1.15.5)
     ffi (1.15.5-x64-mingw32)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
@@ -212,6 +214,8 @@ GEM
     minitest (5.18.0)
     nokogiri (1.14.2-x64-mingw32)
       racc (~> 1.4)
+    nokogiri (1.14.2-x86_64-linux)
+      racc (~> 1.4)
     octokit (4.25.1)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
@@ -245,6 +249,7 @@ GEM
       concurrent-ruby (~> 1.0)
     unf (0.1.4)
       unf_ext
+    unf_ext (0.0.8.2)
     unf_ext (0.0.8.2-x64-mingw32)
     unicode-display_width (1.8.0)
     wdm (0.1.1)
@@ -252,6 +257,7 @@ GEM
 
 PLATFORMS
   x64-mingw32
+  x86_64-linux
 
 DEPENDENCIES
   github-pages