[Buildroot] [PATCH 1/1] package/systemd: bump version to 242

[Jan Kundrát]

This is not a simple bump for people who use systemd-networkd (or 
timesyncd, or resolved, or ...). On a build-from-scratch, these services 
won't be enabled anymore. A recent change now apparently requires people to 
run `systemctl prepare-all` [1] to re-create symlinks which enable these 
services.

This makes cross-building more complex, so I filed an issue upstream [2].

Cheers,
Jan

[1] https://github.com/systemd/systemd/blob/v242/NEWS#L223
[2] https://github.com/systemd/systemd/issues/12767