Please remove Build-Depends: gnome-pkg-tools. It wasn't actually being
used since it needed either
dh $@ --with gnome
or for it to be changed to Build-Depends: dh-sequence-gnome

There is a bit more information about what gnome-pkg-tools is
currently used for for at
https://salsa.debian.org/gnome-team/gnome-pkg-tools/-/blob/debian/latest/debian/README.Debian

Thank you,
Jeremy Bícha