ci: add ssh key

.gitea/workflows/auto-update.yaml

@@ -10,6 +10,20 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+      - name: Install SSH keys
+        uses: shimataro/ssh-key-action@d4fffb50872869abe2d9a9098a6d9c5aa7d16be4
+        with:
+          key: ${{ secrets.SSH_GITEA_SSH_KEY }}
+          name: gitea_action
+          known_hosts: ${{ secrets.SSH_GITEA_KNOWN_HOSTS }}
+      - name: Agent SSH keys
+        uses: webfactory/ssh-agent@v0.9.0
+        with:
+          ssh-private-key: ${{ secrets.SSH_GITEA_SSH_KEY }}
+          # name: gitea_action
+          # known_hosts: ${{ secrets.SSH_GITEA_KNOWN_HOSTS }}
+          #- name: Fix SSH key
+          # run: sed -i 's/\r$//g' /root/.ssh/gitea_action
       - uses: cachix/install-nix-action@v20
       - run: nix flake update
       - run: nix flake check