ci: do not clone submodules recursively

Author: ModProg

.github/workflows/docker-publish.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
         with:
-          submodules: recursive
+          submodules: true
 
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'