octave-miscellaneous: license change from GPLv2+ to GPLv3+

[Thomas Sailer]

I'd like to push octave-miscellaneous v1.1.0 to rawhide;
octave-miscellaneous changes the license from GPLv2+ to GPLv3+.

The only package that depends on octave-miscellaneous in the repository
that I am aware of is octave-optim. octave-optim is currently partly
GPLv2+ and GPLv3+. The only dependency of octave-optim is octave-signal,
and that is already GPLv3+.

Are there any objections?

Thanks,
Tom