This update for cmake-extras fixes the following issues:

- Support both qmlplugindump-qt5 and qmlplugindump-qt6 (boo#1254531)
- Fix filename and path of qmlplugindump-qt5 for openSUSE
- Update to 1.9
  * add support for CMake 4.0
- Update to 1.8
  * GMock: wire dependencies between GMock step and library files
  * QmlPlugins: Crude support for qt6