Bump concurrent-ruby from 1.3.6 to 1.3.7 (#118)

Author: github-actions[bot]

Gemfile.lock

@@ -19,7 +19,7 @@ GEM
       rubocop (~> 1.0)
     coderay (1.1.3)
     colorator (1.1.0)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     console (1.34.3)
       fiber-annotation
       fiber-local (~> 1.1)