Merge pull request #10 from mddilley/dependabot/bundler/rack-2.2.2

Bump rack from 2.0.6 to 2.2.2

Author: mddilley

Gemfile.lock

@@ -150,7 +150,7 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
     puma (3.12.4)
-    rack (2.0.6)
+    rack (2.2.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)