Update dependency connect-redis to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
connect-redis	4.0.4 -> 6.0.0

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Release Notes

visionmedia/connect-redis

v6.0.0

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Breaking changes

• #​327 - Remove Node 10 support (@​wavded)

Maintenance

• #​326 - Fix broken windows (@​wavded)

v5.2.0

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Enhancements

• #​322 - Delete key if resulting TTL is negative in set method (@​baumgarb)

Maintenance

• #​324 - Bump redis from 3.0.2 -> 3.1.2 (@​dnwe)
• #​318 - Update readme.md (@​lunush)

v5.1.0

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Enhancements

• #​316 - Add disableTTL flag (@​xowns4817)

Maintenance

• #​314 - Fix broken windows (@​wavded)

v5.0.0

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• Drop support for Node 8

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