[Snyk] Security upgrade rack from 3.0.12 to 3.0.13

[JJediny]

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
	Improper Output Neutralization for Logs SNYK-RUBY-RACK-9058602	631

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🦉 Improper Output Neutralization for Logs

[mitchellhenke]

Closing as a duplicate of #11996