Merge pull request #1111 from Parallel-in-Time/dependabot/bundler/concurrent-ruby-1.3.7

Bump concurrent-ruby from 1.2.2 to 1.3.7

Author: tlunet

Gemfile.lock

@@ -26,7 +26,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     colorator (1.1.0)
-    concurrent-ruby (1.2.2)
+    concurrent-ruby (1.3.7)
     csl (1.6.0)
       namae (~> 1.0)
       rexml