samba: 4.12.1 -> 4.12.2
Release notes: https://www.samba.org/samba/history/samba-4.12.2.html
Fixes:
https://nvd.nist.gov/vuln/detail/CVE-2020-10700
https://nvd.nist.gov/vuln/detail/CVE-2020-10704
authored by Martin Milata and committed by Frederik Rietdijk 8fe050fb 5e40913e