Merge pull request #22 from YuKitAs/dependabot/bundler/rack-2.2.3.1

Bump rack from 2.2.3 to 2.2.3.1

Author: YuKitAs

Gemfile.lock

@@ -85,7 +85,7 @@ GEM
     puma (5.6.4)
       nio4r (~> 2.0)
     racc (1.6.0)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.8)