package/dosfstools: bump version to 4.2
Upstream has not released an xz-compressed tarball this time,
so switch back to the gz-compressed one...
For details see [1].
[1] https://github.com/dosfstools/dosfstools/releases/tag/v4.2
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>