Get dbus building in edge again. This regressed due to the cross-native2
work in pmb which stopped using abuild to install makedepends and does
it in pmb instead. But pmbootstrap's parsing logic can't handle
conditions in the APKBUILD.
Related: issue 3604
Signed-off-by: Caleb Connolly <caleb@postmarketos.org>
[ci:skip-build]: already built successfully in CI