feat: integrate warn in fail script

Author: babblebey

lib/fail.js

@@ -32,8 +32,7 @@ export default async function fail(pluginConfig, context, { Octokit }) {
 
   if (failComment === false || failTitle === false) {
     logger.log("Skip issue creation.");
-    // TODO: use logger.warn() instead of logger.log()
-    logger.log(
+    logger.warn(
       `DEPRECATION: 'false' for 'failComment' or 'failTitle' is deprecated and will be removed in a future major version. Use 'failCommentCondition' instead.`,
     );
   } else if (failCommentCondition === false) {