changed path of the action

Author: CsB-Polymesh

.github/workflows/auth-ff-merge.yml

@@ -18,7 +18,7 @@ jobs:
       pull-requests: write
       issues: write
     steps:
-      - uses: polymesh/ga-auth-validation@v1
+      - uses: PolymeshAssociation/polymesh-action@v1
         with:
           allowed-signers: ${{ vars.MIDDLEWARE_ALLOWED_SIGNERS }}
           github-token: ${{ secrets.GITHUB_TOKEN }}