Update to Samba 4.12.4
resolves: #1849489, #1853255 - Security fixes for CVE-2020-10730
resolves: #1849491, #1853256 - Security fixes for CVE-2020-10745
resolves: #1849509, #1853276 - Security fixes for CVE-2020-10760
resolves: #1851298, #1853259 - Security fixes for CVE-2020-14303
Guenther