Merge pull request stripe#25 from stripe/dependabot/bundler/rack-2.2.3

Bump rack from 2.0.8 to 2.2.3

Author: tomas-stripe

Gemfile.lock

@@ -12,7 +12,7 @@ GEM
     mustermann (1.0.3)
     net-http-persistent (3.0.0)
       connection_pool (~> 2.2)
-    rack (2.0.8)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     sinatra (2.0.5)