Merge pull request #4988 from nenad-vujicic/issue_4912_pr_labeling

Added workflow for PR labeling using Danger

diff --cc Gemfile
Simple merge

diff --cc Gemfile.lock
index defe1e3a4d64b2b4ceb4ab583923c2642322220b,ff949af3e43a7f272dac193838dc81611f5c6f69..ffbb95eb978de9c2d8506d08a7498c6a1c9bbd13
--- 1/Gemfile.lock
--- 2/Gemfile.lock
+++ b/Gemfile.lock
@@@ -344,9 -375,10 +375,10 @@@ GE
      multi_json (1.15.0)
      multi_xml (0.7.1)
        bigdecimal (~> 3.1)
+     nap (1.1.0)
      net-http (0.4.1)
        uri
 -    net-imap (0.4.16)
 +    net-imap (0.4.17)
        date
        net-protocol
      net-pop (0.1.2)