security/sudo should be update to version 1.9.15p2

[Marc Baudoin <babafou%babafou.eu.org@localhost>]

Hi,

security/sudo has recently been updated to version 1.9.15p1,
which has a bug on BSD systems:

   https://www.sudo.ws/releases/stable/#1.9.15p2

   Fixed a bug on BSD systems where sudo would not restore the
   terminal settings on exit if the terminal had parity enabled.
   GitHub issue #326.

Thus, security/sudo should be updated to version 1.9.15p2, which
does not have that problem anymore.

Thanks.