fix workflow bug

Author: RichardZhu2

.github/workflows/test.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: "${{ matrix.python-version }}"
 
       - name: Install dependencies
         run: |