Update redis/redis-rb from 4.4.0 to 4.5.1

The following dependencies have been updated by deps:

• redis/redis-rb from 4.4.0 to 4.5.1

From redi/redis-rb's CHANGELOG

# 4.5.1

* Restore the accidential auth behavior of redis-rb 4.3.0 with a warning. If provided with the `default` user's password, but a wrong username,
  redis-rb will first try to connect as the provided user, but then will fallback to connect as the `default` user with the provided password.
  This behavior is deprecated and will be removed in Redis 4.6.0. Fix #1038.

# 4.5.0

* Handle parts of the command using incompatible encodings. See #1037.
* Add GET option to SET command. See #1036.
* Add ZRANDMEMBER command. See #1035.
* Add LMOVE/BLMOVE commands. See #1034.
* Add ZMSCORE command. See #1032.
* Add LT/GT options to ZADD. See #1033.
* Add SMISMEMBER command. See #1031.
* Add EXAT/PXAT options to SET. See #1028.
* Add GETDEL/GETEX commands. See #1024.
* `Redis#exists` now returns an Integer by default, as warned since 4.2.0. The old behavior can be restored with `Redis.exists_returns_integer = false`.
* Fix Redis < 6 detection during connect. See #1025.
* Fix fetching command details in Redis cluster when the first node is unhealthy. See #1026.

(note: markdown not directly copied to prevent accidental issue linking)