add message key to tests with error state

Author: ABaldwinHunter

test/github_pull_requests_test.rb

@@ -69,6 +69,7 @@ def test_pull_request_status_error
       github_slug: "pbrisbin/foo",
       commit_sha:  "abc123",
       state:       "error",
+      message:     "Code Climate encountered an error while attempting to analyze this pull request.",
     })
   end
 
@@ -112,6 +113,7 @@ def test_no_status_update_for_error_when_update_status_config_is_falsey
       github_slug: "pbrisbin/foo",
       commit_sha:  "abc123",
       state:       "error",
+      message:     "Code Climate encountered an error while attempting to analyze this pull request.",
     })
   end