fix: missing list_latest_versions due to loose regex on gem files (#170)

* fix: missing list_latest_versions due to loose regex on gem files
* chore: remove unnecessary features folder exclusion

pact-broker-client.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |gem|
   gem.description   = %q{Client for the Pact Broker. Publish, retrieve and query pacts and verification results. Manage webhooks and environments.}
   gem.summary       = %q{See description}
   gem.homepage      = "https://github.com/pact-foundation/pact_broker-client.git"
-  gem.files         = `git ls-files`.split($/).reject { |file| file.match(/(test|spec|features)/) }
+  gem.files         = `git ls-files`.split($/).reject { |file| file.match(/(test\/|spec\/|.github\/)/) }
 
   gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
   gem.require_paths = ["lib"]