ci(workflow): 更新Flutter版本至3.35.5并移除旧版本检查步骤

.gitea/workflows/docker.yml

@@ -191,16 +191,8 @@ jobs:
     - name: Setup Flutter
       uses: subosito/flutter-action@v2
       with:
-        flutter-version: '3.24.0'
+        flutter-version: '3.35.5'
         channel: 'stable'
-
-    - name: Checkout Flutter 3.24.5
-      shell: powershell
-      run: |
-        Set-Location $env:FLUTTER_ROOT
-        git fetch --tags
-        git checkout 3.24.5
-        flutter --version
     - name: Enable Windows desktop
       run: flutter config --enable-windows-desktop