qt5_use_modules warning

[z3ntu]

CMake Warning (dev) at /usr/lib/cmake/Qt5Core/Qt5CoreMacros.cmake:44 (message):
  qt5_use_modules is not part of the official API, and might be removed in Qt
  6.
Call Stack (most recent call first):
  /usr/lib/cmake/Qt5Core/Qt5CoreMacros.cmake:431 (_qt5_warn_deprecated)
  tests/dbus-types/CMakeLists.txt:56 (qt5_use_modules)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at /usr/lib/cmake/Qt5Core/Qt5CoreMacros.cmake:44 (message):
  qt5_use_modules is not part of the official API, and might be removed in Qt
  6.
Call Stack (most recent call first):
  /usr/lib/cmake/Qt5Core/Qt5CoreMacros.cmake:431 (_qt5_warn_deprecated)
  tests/service-mocks/media-player-mpris-mock/CMakeLists.txt:47 (qt5_use_modules)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at /usr/lib/cmake/Qt5Core/Qt5CoreMacros.cmake:44 (message):
  qt5_use_modules is not part of the official API, and might be removed in Qt
  6.
Call Stack (most recent call first):
  /usr/lib/cmake/Qt5Core/Qt5CoreMacros.cmake:431 (_qt5_warn_deprecated)
  tests/service-mocks/media-player-mpris-mock/CMakeLists.txt:53 (qt5_use_modules)
This warning is for project developers.  Use -Wno-dev to suppress it.

The same thing was fixed in a bunch of ubports packages already, e.g. https://github.com/ubports/system-settings/pull/64/files Good as reference what to do.