Bump hiredis version to 1.0.2

[jobec]

There's a security fix available for hiredis.

See:

• CVE-2021-32765 - GHSA-hfm9-39pp-55p2
• https://github.com/redis/hiredis/blob/master/CHANGELOG.md

[illia-v]

CVE-2021-32765 is related to a fix of a createArrayObject function.

hiredis-py defines its own version of the function. So the CVE and the fix should not touch hiredis-py, I am not sure if any similar vulnerability exists in this package though.