Add redis-client and redis-cluster-client to Ruby clients

[supercaracal]

Hello,

We implemented two clients for Ruby. They were made by the same maintainers as the redis gem. They are geared toward Redis version 6 or later.

• Plan for redis-rb 5.0 redis-rb#1070
• https://rubygems.org/gems/redis-client
  • https://github.com/redis-rb/redis-client
• https://rubygems.org/gems/redis-cluster-client
  • https://github.com/redis-rb/redis-cluster-client
• https://rubygems.org/gems/redis-clustering
  • https://github.com/redis/redis-rb/tree/master/cluster

[netlify]

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