Attempt to match vim-vint's GitHub actions config

Author: jez

.github/workflows/vint.yml

@@ -7,9 +7,9 @@ jobs:
     - name: Checkout
       uses: actions/checkout@master
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
       with:
-        python-version: 3.13
+        python-version: 3.10
     - name: Setup dependencies
       run: pip install vim-vint
     - name: Run Vimscript Linter