Log Message:
samba4: updated to 4.13.12

Changes since 4.13.11
---------------------
* BUG 14806: Address a signifcant performance regression in database access
  in the AD DC since Samba 4.12.
* BUG 14807: Fix performance regression in lsa_LookupSids3/LookupNames4 since
  Samba 4.9 by using an explicit database handle cache.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
  server name in a TGS-REQ.
* BUG 14818: Address flapping samba_tool_drs_showrepl test.
* BUG 14819: Address flapping dsdb_schema_attributes test.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
  server name in a TGS-REQ
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
  server name in a TGS-REQ.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
  server name in a TGS-REQ.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
  server name in a TGS-REQ.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
  server name in a TGS-REQ.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
  server name in a TGS-REQ.
* BUG 14784: Fix CTDB flag/status update race conditions.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
  server name in a TGS-REQ.