databases/redis-devel: security update from 6.2.3 to 6.2.4

Changelog: https://github.com/redis/redis/compare/6.2.3...6.2.4
PR: 256340
Security: CVE-2021-32625
Security: 8eb69cd0-c2ec-11eb-b6e7-8c164567ca3c
(cherry picked from commit 404a8a3dcfe44008a77681798d15e6d43285f73a)