Add write permission to github actions

.github/workflows/nightly.yml

@@ -14,6 +14,8 @@ jobs:
         run: cargo run --release -- crate svds transforms output
       - name: Push nightly
         working-directory: ./output
+        permission:
+          contents: write
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |