python3-bcrypt and python3-pytz both run in just a few seconds, so add
them to the fast list.
(From OE-Core rev: 555cefec5d554eb610166ff9d0cbf0a620d99632)
Signed-off-by: Tim Orling <tim.orling@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>