[Samba] Updating Samba from a bit old 4.0.10

[Elyad Alaei]

Hi dears,

It has been a long time that we did not update our samba (4.0.10). Is it
possible to directly update it  to the latest stable version as stated in
https://wiki.samba.org/index.php/Updating_Samba or we should take another
path?!
Please note that we have just one samba 4 AD DC working with internal DNS
and without any additional DC or replication.

Yours,
E. Alaei