feat(gems): update pact_broker gem to version 2.19.1

Author: bethesque

Diff for: pact_broker/Gemfile.lock

@@ -56,7 +56,7 @@ GEM
     multi_xml (0.6.0)
     mustermann (1.0.2)
     mysql2 (0.5.1)
-    pact-support (1.6.0)
+    pact-support (1.6.1)
       awesome_print (~> 1.1)
       find_a_port (~> 1.0.1)
       json