Merge pull request #75 from ginzarb/dependabot/bundler/concurrent-ruby-1.3.7

Bump concurrent-ruby from 1.3.6 to 1.3.7

Author: y-yagi

Gemfile.lock

@@ -22,7 +22,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     contracts (0.16.1)
     dotenv (3.1.2)