Merge pull request #73 from alphagov/allow-gemspec-changes

Allow auto-merging when changes are made to gemspec files

lib/pull_request.rb

@@ -40,7 +40,7 @@ def validate_single_commit
   def validate_files_changed
     commit = GitHubClient.instance.commit("alphagov/#{@api_response.base.repo.name}", @api_response.head.sha)
     files_changed = commit.files.map(&:filename)
-    allowed_files = ["yarn.lock", "Gemfile.lock"]
+    allowed_files = ["yarn.lock", "Gemfile.lock", "#{@api_response.base.repo.name}.gemspec"]
     (files_changed - allowed_files).empty?
   end