fix: add jsonpath dependency

required when generator code was moved to pact-support, and jsonpath removed from pact-ruby

relates to pact-foundation/pact-ruby#386

Author: YOU54F

pact-support.gemspec

@@ -25,6 +25,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "expgen", "~> 0.1"
   spec.add_runtime_dependency 'string_pattern', '~> 2.0'
   spec.add_runtime_dependency 'json', '~> 2.12.2'
+  spec.add_runtime_dependency 'jsonpath', '~> 1.0'
   spec.add_runtime_dependency 'logger', '< 2.0'
   spec.add_development_dependency "stringio", "~> 3"