Update c-cpp.yml

Author: masterccc

.github/workflows/c-cpp.yml

@@ -14,7 +14,8 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v3
         with:
-          version: '6.9.1'
+          version: '6.7.0'
+          mirror: 'https://download.qt.io/official_releases/qt/'
 
       - name: Build with qmake and make
         run: |