Update peter-evans/create-pull-request action to v4

Author: renovate-bot

.github/workflows/send-pr.yml

@@ -34,7 +34,7 @@ jobs:
 
       - name: "Create Pull Request"
         id: create-pr
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           token: ${{ secrets.PHPSTAN_BOT_TOKEN }}
           path: ./phpstan-src