mailmap: add entries for Serge Hallyn's dead accounts

Signed-off-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Serge Hallyn 2023-11-13 10:22:22 -06:00 • committed by Paul Moore
commit e596ff4a79