chore(deps): update dependency pact to v2

Author: renovate[bot]

Gemfile

@@ -27,7 +27,7 @@ group :test do
     gem "pact", path: "../pact-ruby"
     gem "pact-ffi", path: "../pact-ruby-ffi"
   else
-    gem "pact", "~>1.14"
+    gem "pact", "~>2.0"
     gem "pact-ffi", "~>0.4.28"
   end
   gem "rspec-pact-matchers", "~>0.1"