* Team upload.
* Drop the spurious plasma-framework dependency from plasma-marble: the former
is for Qt 5, while marble (including the Plasma bits) uses Qt 6.
* Update symbols files from the logs of buildds.
* Simplify the license texts for GPL & LGPL licenses in copyright.
* CI: make the build non-verbose, so the build log fits within the salsa
limits.
* Remove trailing whitespaces in changelog and control.
* Drop some build dependencies used only in examples (which are not built):
libopencv-core-dev, libopencv-highgui-dev, libopencv-imgproc-dev, and
libopencv-videoio-dev.