Use local upload-sarif Action in PR checks job

Author: henrymercer

.github/workflows/pr-checks.yml

@@ -69,7 +69,7 @@ jobs:
         run: npm run lint-ci
 
       - name: Upload sarif
-        uses: github/codeql-action/upload-sarif@v4
+        uses: ./upload-sarif
         if: matrix.os == 'ubuntu-latest' && matrix.node-version == 24
         with:
           sarif_file: eslint.sarif