Merge pull request #27 from Teamtailor/dependabot/bundler/rack-2.2.6.4

Bump rack from 2.2.6.3 to 2.2.6.4

Author: himynameisjonas

Gemfile.lock

@@ -107,7 +107,7 @@ GEM
       ast (~> 2.4.1)
     public_suffix (4.0.6)
     racc (1.6.1)
-    rack (2.2.6.3)
+    rack (2.2.6.4)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.6)