Merge pull request #197 from rspec/dependabot/bundler/rack-2.2.8.1

Bump rack from 2.2.6.4 to 2.2.8.1

Author: JonRowe

Gemfile.lock

@@ -117,7 +117,7 @@ GEM
     parslet (2.0.0)
     public_suffix (4.0.7)
     racc (1.7.3)
-    rack (2.2.6.4)
+    rack (2.2.8.1)
     rack-contrib (2.3.0)
       rack (~> 2.0)
     rack-livereload (0.3.17)