fix(auth-ff-merge): update polymesh-action to version 1.1.4

Author: mpastecki

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

@@ -26,7 +26,7 @@ jobs:
           # For comment events: fetches PR head using the PR number
           ref: ${{ github.event.pull_request.head.sha || format('refs/pull/{0}/head', github.event.issue.number) }}
       - name: Polymesh Action - Auth and Fast-Forward
-        uses: PolymeshAssociation/polymesh-action-public@v1.1.2
+        uses: PolymeshAssociation/polymesh-action-public@v1.1.4
         with:
           allowed-signers: ${{ vars.MIDDLEWARE_ALLOWED_SIGNERS }}
           github-token: ${{ secrets.GITHUB_TOKEN }}