Fix redis-rb v4.6.0 pipelining depreciation

[d1ceward]

Hi,
This is a small fix for the depreciation alert that appeared with version 4.6.0 of redis-rb which can pollute the logs quite a bit.
(cf. https://github.com/redis/redis-rb/blob/master/CHANGELOG.md#460)

Example of the depreciation message

[markets]

thanks for this patch @d1ceward 👌🏼

@ondrejbartas do you think we can merge this one and prepare a release? Thank you so much in advance!

[boushley]

So is it time to start considering that this repo isn't actively maintained anymore and so we should look at starting a fork where we can add some new maintainers?

[jaedb]

@boushley yes please. I am holding off a release until this dependency can be resolved. I don't much fancy spamming our production logs with this deprecation notice.

[markets]

I agree it would be really helpful to publish a new release.

Similar issues, like #288, have been fixed in master branch (full diff: v1.2.0...master), but still not pushed to RubyGems.

[mathieujobin]

Thanks for this, I am using this branch

[qortex]

Any chance to cut a new release?

[boushley]

I believe we're planning to migrate to: https://github.com/Moove-it/sidekiq-scheduler as it seems to have active maintainers.

[qortex]

Hum, I understand, but I feel just fine with this gem, does the trick for my needs and would love to spare the migration time :p

@ondrejbartas , any chance for a new rubygems release?

[ludo]

@boushley thanks, we might do the same. It looks like a fairly easy migration path. sidekiq-cron has served us well. I know priorities change and I can understand that sidekiq-cron is not the highest priority for the maintainers :) C'est la vie!

[AndreiMotinga]

@ondrejbartas thanks for the work.
any chance you planning on cutting a new release any time soon?

[markets]

@AndreiMotinga that was released as 1.3.0 https://github.com/ondrejbartas/sidekiq-cron/blob/master/Changes.md#130