Bug#1129172: opencv: Please switch to Qt6

[Guillem Jover]

Source: opencv
Source-Version: 4.10.0+dfsg-7
Severity: normal

Hi!

With upstream Qt5 support being EOL, we should be switching packages
to Qt6. Looking briefly into opencv, it seems like it should have already
Qt6 support (?), and it might be a matter of changing -DWITH_QT=5 to =6?
But I've not tried, nor I've checked whether this would affect any
exposed ABI.

Thanks,
Guillem