Enclose in quotes to prevent 3.10 to 3.1

.github/workflows/merge-gate.yml

@@ -141,7 +141,7 @@ jobs:
     - name: Set up Python 3.10
       uses: actions/setup-python@v4
       with:
-        python-version: 3.10
+        python-version: '3.10'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip