dependency: bump sidekiq from 6.2.0 to 6.2.1

Bumps sidekiq from 6.2.0 to 6.2.1.

Changelog

Sourced from sidekiq's changelog.

6.2.1

• Update RTT warning logic to handle transient RTT spikes #4851
• Fix very low priority CVE on unescaped queue name #4852
• Add note about sessions and Rails apps in API mode

Commits

• 50d0c3d bump, release
• 5910951 ready for release
• 8d860cd Fix incorrect button rounding (#4862)
• 0ca5385 changes
• 6767e53 mimemagic!!!!
• 141e157 Every damn time, Bundler
• 7a008e4 bump
• 24c35e6 Add note about sessions and Rails apps in API mode
• f508a30 changes
• ea32776 Standard!!!
• Additional commits viewable in compare view

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