mailmap: Fix Andrey Drobyshev author email

mailmap: Fix Andrey Drobyshev author email

This fixes authorship of commits 2848289168, 52b10c9c0c as the mailing
list rewrote the "From:" field in the corresponding patches.  See commit
3bd2608db7 ("maint: Add .mailmap entries for patches claiming list
authorship") for explanation.

Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
Message-ID: <20230926102801.512107-1-andrey.drobyshev@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Eric Blake <eblake@redhat.com>