GIT_SILENT: Port away from ECMSetupVersion's deprecated *_VERSION_STRING CMake variable

3 jobs for master in 12 minutes and 18 seconds (queued for 331 minutes and 34 seconds)
Status Name Job ID Coverage
  Build
passed build_clazy_clang_tidy #104669

00:09:14

passed linux kf5-qt5 qt5.15 #104668

00:02:31

73.0%
 
  Test
passed reuse #104670

00:00:32