CI: Disable the commit linter on draft pull requests

Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/6a067e5a1df
Pull-request: https://github.com/SerenityOS/serenity/pull/7559

.github/workflows/lintcommits.yml

@@ -5,7 +5,7 @@ on: [pull_request_target]
 jobs:
   lint_commits:
     runs-on: ubuntu-20.04
-    if: always() && github.repository == 'SerenityOS/serenity'
+    if: always() && github.repository == 'SerenityOS/serenity' && !github.event.pull_request.draft
 
     steps:
       - name: Get PR Commits