[CI] add ssh key

.github/workflows/arkdep_build.yaml

@@ -1,9 +1,9 @@
 name: arkdep_build
 on:
+  workflow_dispatch:
   push:
     branches:
       - '**'
-  #workflow_dispatch:
   #schedule:
   #   - cron:  '30 6 1 * *'
 
@@ -19,6 +19,10 @@ jobs:
       - uses: styfle/[email protected]
         with:
           access_token: ${{ github.token }}
+      - name: Give GitHub Actions access to manjaro/arkdep-variants
+        uses: webfactory/[email protected]
+        with:
+          ssh-private-key: ${{ secrets.ACTION_REPO_DEPLOY_KEY }}
       - id: arkdep-build
         uses: manjaro/arkdep-action@main
         with: