build: Bump some dependency versions

build: Bump some dependency versions

Mutter and gnome-shell are released in lock-step, but I forgot to
bump the requirement accordingly.

Likewise the gsettings-desktop-schemas dependency is outdated, there
are a couple of keys we depend on that were added this cycle.

And while building should still be possible with the old gjs version,
we do require a newer version at runtime, so reflect that as well.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2183>