Bump concurrent-ruby from 1.1.3 to 1.1.4

Bumps [concurrent-ruby](https://github.com/ruby-concurrency/concurrent-ruby) from 1.1.3 to 1.1.4.
- [Release notes](https://github.com/ruby-concurrency/concurrent-ruby/releases)
- [Changelog](https://github.com/ruby-concurrency/concurrent-ruby/blob/master/CHANGELOG.md)
- [Commits](ruby-concurrency/concurrent-ruby@v1.1.3...v1.1.4)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support

Gemfile.lock

@@ -16,7 +16,7 @@ GEM
     colorize (0.8.1)
     commonmarker (0.17.13)
       ruby-enum (~> 0.5)
-    concurrent-ruby (1.1.3)
+    concurrent-ruby (1.1.4)
     dnsruby (1.61.2)
       addressable (~> 2.5)
     em-websocket (0.5.1)