Bug#1094740: marble: Unnecessary Build-Depends: libqt5webkit5-dev

[Bastian Germann]

Source: marble
Control: fixed -1 4:24.12.0-1

Please remove Build-Depends: libqt5webkit5-dev, which is unused in unstable and 
non-existing in experimental.
So either upload a new Qt5-based version without the Build-Depends or move the 
experimental version to unstable.
The experimental armhf does not build on the buildd network because of too few 
memory.
A good way to fix this would probably be dropping the qt6-webengine-dev 
dependency from armhf.