remove glibmm2.68-dev from makedepends, upstream removed dependency of
it
take maintainership

Nulo asked to no longer maintain package on IRC.

Hugo Barrera authored 1 year ago and Patrycja Rosa committed 1 year ago

After the latest qt update, running fails due to a mismatch between the
installation-time qt and the runtime qt.

Fixes: #15360

this hasn't been needed since 4.2.4, where they imported this bundling
themselves

this was just moving a folder into another folder (it existed) and an
empty sed