Fix deployment CI

Author: serras

.github/workflows/deploy.yml

@@ -8,6 +8,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/[email protected]
+    - name: Unshallow
+      run: git fetch --prune --unshallow
     - uses: serras/setup-stack@v3
     - uses: actions/[email protected]
       name: Cache ~/.stack