Update dependency redis to v5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
redis (changelog)	'~> 4.0' -> '~> 5.0'

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Release Notes

redis/redis-rb (redis)

v5.3.0

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• Fix the return type of hgetall when used inside a multi transaction which is itself inside a pipeline.

v5.2.0

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• Now require Ruby 2.6 because redis-client does.
• Eagerly close subscribed connection when using subscribe_with_timeout. See #​1259.
• Add exception flag in pipelined allowing failed commands to be returned in the result array when set to false.

v5.1.0

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• multi now accept a watch keyword argument like redis-client. See #​1236.
• bitcount and bitpos now accept a scale: argument on Redis 7+. See #​1242
• Added expiretime and pexpiretime. See #​1248.

v5.0.8

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• Fix Redis#without_reconnect for sentinel clients. Fix #​1212.
• Add sentinel_username, sentinel_password for sentinel clients. Bump redis-client to >=0.17.0. See #​1213

v5.0.7

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• Fix compatibility with redis-client 0.15.0 when using Redis Sentinel. Fix #​1209.

v5.0.6

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• Wait for an extra config.read_timeout in blocking commands rather than an arbitrary 100ms. See #​1175.
• Treat ReadOnlyError as ConnectionError. See #​1168.

v5.0.5

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• Fix automatic disconnection when the process was forked. See #​1157.

v5.0.4

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• Cast ttl argument to integer in expire, setex and a few others.

v5.0.3

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• Add OutOfMemoryError as a subclass of CommandError

v5.0.2

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• Fix Redis#close to properly reset the fork protection check.

v5.0.1

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• Added a fake Redis::Connections.drivers method to be compatible with older sidekiq versions.

v5.0.0

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• Default client timeout decreased from 5 seconds to 1 second.
• Eagerly and strictly cast Integer and Float parameters.
• Allow to call subscribe, unsubscribe, psubscribe and punsubscribe from a subscribed client. See #​1131.
• Use MD5 for hashing server nodes in Redis::Distributed. This should improve keys distribution among servers. See #​1089.
• Changed sadd and srem to now always return an Integer.
• Added sadd? and srem? which always return a Boolean.
• Added support for IDLE paramter in xpending.
• Cluster support has been moved to a redis-clustering companion gem.
• select no longer record the current database. If the client has to reconnect after select was used, it will reconnect to the original database.
• Better support Float timeout in blocking commands. See #​977.
• Redis.new will now raise an error if provided unknown options.
• Removed positional timeout in blocking commands (BLPOP, etc). Timeout now must be passed as an option: r.blpop("key", timeout: 2.5)
• Removed logger option.
• Removed reconnect_delay_max and reconnect_delay, you can pass precise sleep durations to reconnect_attempts instead.
• Require Ruby 2.5+.
• Removed the deprecated queue and commit methods. Use pipelined instead.
• Removed the deprecated Redis::Future#==.
• Removed the deprecated pipelined and multi signature. Commands now MUST be called on the block argument, not the original redis instance.
• Removed Redis.current. You shouldn't assume there is a single global Redis connection, use a connection pool instead,
  and libaries using Redis should accept a Redis instance (or connection pool) as a config. E.g. MyLibrary.redis = Redis.new(...).
• Removed the synchrony driver.
• Removed Redis.exists_returns_integer, it's now always enabled.

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