CHANGE: Bump connector version; Linted yaml file

Author: 0x78f1935

.github/workflows/windows.yaml

@@ -2,15 +2,15 @@ name: Build windows wheels
 
 on:
   push:
-    branches: ["main", "ci"]
+    branches: ['main', 'ci']
   pull_request:
   workflow_dispatch:
 
 jobs:
   build:
     runs-on: windows-latest
     env:
-      CONNECTOR_VERSION: "3.4.1"
+      CONNECTOR_VERSION: '3.4.7'
     steps:
       - name: Cache Connector
         id: cache-connector
@@ -79,10 +79,10 @@ jobs:
       - name: Build wheels
         working-directory: mysqlclient
         env:
-          CIBW_PROJECT_REQUIRES_PYTHON: ">=3.9"
-          CIBW_ARCHS: "AMD64"
+          CIBW_PROJECT_REQUIRES_PYTHON: '>=3.9'
+          CIBW_ARCHS: 'AMD64'
           CIBW_TEST_COMMAND: 'python -c "import MySQLdb; print(MySQLdb.version_info)" '
-        run: "python -m cibuildwheel --prerelease-pythons --output-dir dist"
+        run: 'python -m cibuildwheel --prerelease-pythons --output-dir dist'
 
       - name: Build sdist
         working-directory: mysqlclient