Updated CI MinGW Qt version to 6.8.2

Author: githubuser0xFFFF

.github/workflows/windows-cmake.yml

@@ -58,7 +58,7 @@ jobs:
     runs-on: windows-2022
 
     env:
-      QT_VERSION: 6.4.2
+      QT_VERSION: 6.8.2
       QT_DIR: ${{ github.workspace }}\Qt
 
     steps:
@@ -78,7 +78,7 @@ jobs:
       shell: powershell
 
     - name: 📥 Install Qt for MinGW
-      uses: jurplel/install-qt-action@v3
+      uses: jurplel/install-qt-action@v4
       with:
         aqtversion: '==3.1.19'
         version: ${{ env.QT_VERSION }}