Update Qt version to 6.9.0

Author: DavidLazarescu

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v3
         with:
-          version: '6.5.3'
+          version: '6.9.0'
 
       - name: Install tools
         run: sudo apt-get update && sudo apt-get install -y cmake ninja-build clang-15 clang++-15