ci(github): fix zip.yml

```
zip error: Nothing to do! (try: zip -r archive.zip . -i .)
```

Author: remarkablemark

.github/workflows/zip.yml

@@ -9,6 +9,9 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
       - name: zip
         shell: bash
         run: |