[build] pip3 install latest redis with hiredis together #9319
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Why I did it
Rework #9317
redis-py (>=4.0.0) works best with hiredis
ref: https://github.com/redis/redis-py#parsers
Otherwise there will be a warning message
redis-py works best with hiredis
and will break sonic-config-engine unit test.Fixes #9318
How I did it
How to verify it
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