Update dependency redis to v5.2.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
redis (changelog)	==5.2.0 -> ==5.2.1

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Release Notes

redis/redis-py (redis)

v5.2.1: 5.2.1

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Changes

🐛 Bug Fixes

• Fixed unsecured tempfile.mktemp() command usage (#​3446)
• Fixed bug with SLOWLOG GET response parsing on Redis Software (#​3441)
• Fixed issue with invoking _close() on closed event loop (#​3438)

🧰 Maintenance

• Migrate test infrastructure to new custom docker images (#​3415)
• Fixed flacky test with HEXPIREAT command (#​3437)

Contributors

We'd like to thank all the contributors who worked on this release!

@​IlianIliev @​uglide @​vladvildanov @​teodorfn @​akx

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