redis: updated to 7.0.8

Redis 7.0.8 Released Mon Jan 16 12:00:00 IDT 2023

Upgrade urgency: SECURITY, contains fixes to security issues.

Security Fixes:
* (CVE-2022-35977) Integer overflow in the Redis SETRANGE and SORT/SORT_RO
  commands can drive Redis to OOM panic
* (CVE-2023-22458) Integer overflow in the Redis HRANDFIELD and ZRANDMEMBER
  commands can lead to denial-of-service

Bug Fixes
* Avoid possible hang when client issues long KEYS, SRANDMEMBER, HRANDFIELD,
  and ZRANDMEMBER commands and gets disconnected by client output buffer limit
* Make sure that fork child doesn't do incremental rehashing
* Fix a bug where blocking commands with a sub-second timeout would block forever
* Fix sentinel issue if replica changes IP

(adam)