[Snyk] Security upgrade sidekiq-cron from 1.12.0 to 2.0.0

[tberey]

Snyk has created this PR to fix 1 vulnerabilities in the rubygems dependencies of this project.

Snyk changed the following file(s):

• Gemfile
• Gemfile.lock

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Uncontrolled Resource Consumption ('Resource Exhaustion') SNYK-RUBY-FUGIT-7720645	62

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🦉 Uncontrolled Resource Consumption ('Resource Exhaustion')