Try to delete old comments

Author: koppor

.github/workflows/pr-comment.yml

@@ -56,7 +56,7 @@ jobs:
         if: ${{ steps.read-pr_number.outputs.pr_number != '' && steps.isCrossRepository.outputs.isCrossRepository == 'true' }}
         uses: jbangdev/[email protected]
         with:
-          script: ghprcomment@koppor/ghprcomment
+          script: https://github.com/koppor/ghprcomment/blob/fix-4/ghprcomment.java
           scriptargs: "-r JabRef/jabref -p ${{ steps.read-pr_number.outputs.pr_number }} -w ${{ github.event.workflow_run.id }}"
           trust: https://github.com/koppor/ghprcomment/
         env: