Update webfactory/ssh-agent action to v0.9.1

Author: renovate[bot]

.github/workflows/ci.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup SSH Agent
-        uses: webfactory/[email protected].0
+        uses: webfactory/[email protected].1
         with:
           ssh-private-key: |
             ${{ secrets.SSH_PRIVATE_KEY }}