add missing dependency on zmq to mac-build.md
add missing dependency on zmq to mac-build.md

Signed-off-by: Harold Ship <b3aa8d62454f099d2c91be5b29e8ac4777414ef7@gmail.com>

peacekeeper/indy-sdk,anastasia-tarasova/indy-sdk,Artemkaaas/indy-sdk,peacekeeper/indy-sdk,Artemkaaas/indy-sdk,Artemkaaas/indy-sdk,srottem/indy-sdk,peacekeeper/indy-sdk,peacekeeper/indy-sdk,Artemkaaas/indy-sdk,peacekeeper/indy-sdk,peacekeeper/indy-sdk,peacekeeper/indy-sdk,peacekeeper/indy-sdk,anastasia-tarasova/indy-sdk,anastasia-tarasova/indy-sdk,Artemkaaas/indy-sdk,anastasia-tarasova/indy-sdk,srottem/indy-sdk,Artemkaaas/indy-sdk,srottem/indy-sdk,anastasia-tarasova/indy-sdk,anastasia-tarasova/indy-sdk,srottem/indy-sdk,anastasia-tarasova/indy-sdk,srottem/indy-sdk,srottem/indy-sdk,Artemkaaas/indy-sdk,Artemkaaas/indy-sdk,anastasia-tarasova/indy-sdk,anastasia-tarasova/indy-sdk,anastasia-tarasova/indy-sdk,srottem/indy-sdk,srottem/indy-sdk,srottem/indy-sdk,srottem/indy-sdk,anastasia-tarasova/indy-sdk,srottem/indy-sdk,peacekeeper/indy-sdk,peacekeeper/indy-sdk,Artemkaaas/indy-sdk,srottem/indy-sdk,peacekeeper/indy-sdk,srottem/indy-sdk,Artemkaaas/indy-sdk,peacekeeper/indy-sdk,peacekeeper/indy-sdk,Artemkaaas/indy-sdk,Artemkaaas/indy-sdk,anastasia-tarasova/indy-sdk,anastasia-tarasova/indy-sdk,Artemkaaas/indy-sdk