Bump sidekiq from 4.2.4 to 5.2.0

[dependabot]

Bumps sidekiq from 4.2.4 to 5.2.0.

Changelog

Sourced from sidekiq's changelog.

5.2.0

• Decrease default concurrency from 25 to 10 #3892
• Verify connection pool sizing upon startup #3917
• Smoother scheduling for large Sidekiq clusters #3889
• Switch Sidekiq::Testing impl from alias_method to Module#prepend, for resiliency #3852
• Update Sidekiq APIs to use SCAN for scalability [#3848, ffiller]
• Remove concurrent-ruby gem dependency #3830
• Optimize Web UI's bootstrap.css #3914

5.1.3

• Fix version comparison so Ruby 2.2.10 works. [#3808, nateberkopec]

5.1.2

• Add link to docs in Web UI footer
• Fix crash on Ctrl-C in Windows [#3775, Bernica]
• Remove freeze calls on String constants. This is superfluous with Ruby 2.3+ and frozen_string_literal: true. #3759
• Fix use of AR middleware outside of Rails #3787
• Sidekiq::Worker sidekiq_retry_in block can now return nil or 0 to use the default backoff delay [#3796, dsalahutdinov]

5.1.1

• Fix Web UI incompatibility with Redis 3.x gem #3749

5.1.0

• NEW Global death handlers - called when your job exhausts all retries and dies. Now you can take action when a job fails permanently. #3721
• NEW Enable ActiveRecord query cache within jobs by default [#3718, sobrinho] This will prevent duplicate SELECTS; cache is cleared upon any UPDATE/INSERT/DELETE. See the issue for how to bypass the cache or disable it completely.
• Scheduler timing is now more accurate, 15 -> 5 seconds #3734
• Exceptions during the :startup event will now kill the process #3717
• Make Sidekiq::Client.via reentrant #3715
• Fix use of Sidekiq logger outside of the server process #3714
• Tweak constantize to better match Rails class lookup. [#3701, caffeinated-tech]

5.0.5

• Update gemspec to allow newer versions of the Redis gem #3617

... (truncated)

Commits

• b1bdaa7 Verify connection pool sizing, fixes #3917
• 03e63b8 Add TTL for stats keys
• e339d23 Add CSP header to web admin to ensure it matches needs (#3913)
• 778b9cf changes
• 35cdf82 Merge branch 'master' of github.com:mperham/sidekiq
• 353c95d Updated bootstrap with glyphicons removed, fixes #3914
• fa8a943 Remove superfluous executable bit
• 2929413 Merge branch 'master' of github.com:mperham/sidekiq
• 173ce98 Convert queue name to string, fixes #3907
• 24ac099 Merge branch 'master' of github.com:mperham/sidekiq
• Additional commits viewable in compare view

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