Merge pull request #621 from Freeesia/dependabot/bundler/docs/concurrent-ruby-1.3.7

Author: Freeesia

docs/Gemfile.lock

@@ -25,7 +25,7 @@ GEM
     coffee-script-source (1.12.2)
     colorator (1.1.0)
     commonmarker (0.23.11)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     csv (3.3.2)
     dnsruby (1.73.1)