feat(gems): update to pact_broker-client 1.16.0

Author: bethesque

packaging/Gemfile.lock

@@ -57,7 +57,7 @@ GEM
       rspec (>= 2.14)
       term-ansicolor (~> 1.0)
       thor
-    pact_broker-client (1.15.1)
+    pact_broker-client (1.16.0)
       httparty
       json
       rake