feat(gems): update to pact-support 1.6.4

Author: bethesque

packaging/Gemfile.lock

@@ -49,7 +49,7 @@ GEM
       rake (~> 10.4, >= 10.4.2)
       rspec (~> 3.5)
       rspec_junit_formatter (~> 0.3)
-    pact-support (1.6.3)
+    pact-support (1.6.4)
       awesome_print (~> 1.1)
       find_a_port (~> 1.0.1)
       json