Qt 6.8 uses C++20

Author: usiems

generator/main.cpp

@@ -134,7 +134,7 @@ namespace
       }
       dui.defines.push_back("__cplusplus=1");
       dui.defines.push_back("__STDC__");
-      dui.std = "c++17";
+      dui.std = "c++20";
       dui.removeComments = true;
 
       QFile file(sourceFile);