Merge pull request #137 from github/dependabot/bundler/rack-3.1.20

Bump rack from 3.1.18 to 3.1.20

Author: nobe4

Gemfile.lock

@@ -91,7 +91,7 @@ GEM
       stringio
     public_suffix (7.0.0)
     racc (1.8.1)
-    rack (3.1.18)
+    rack (3.1.20)
     rainbow (3.1.1)
     rake (13.3.1)
     rdoc (7.0.3)