ci(github-action)!: Update action mshick/add-pr-comment ( v2 ➔ v3 )

Author: renovate[bot]

.github/workflows/flux-diff.yaml

@@ -89,7 +89,7 @@ jobs:
 
       - name: Add comment
         if: ${{ steps.diff-md.outputs.size > 0 && github.event_name == 'pull_request' }}
-        uses: mshick/add-pr-comment@v2
+        uses: mshick/add-pr-comment@v3
         with:
           message-id: "${{ github.event.pull_request.number }}/${{ matrix.resources }}"
           message-failure: Diff was not successful