Merge pull request #568 from 3scale/depfu/update/rack-2.2.20

🚨 [security] Update rack 2.2.19 → 2.2.20 (patch)

Author: akostadinov

Gemfile.lock

@@ -241,7 +241,7 @@ GEM
       que (>= 1)
       sinatra
     racc (1.8.1)
-    rack (2.2.19)
+    rack (2.2.20)
     rack-protection (2.2.3)
       rack
     rack-test (2.1.0)