[Snyk] Security upgrade sinatra from 2.0.8.1 to 2.1.0

[abedra]

Snyk has created this PR to fix 12 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
	Allocation of Resources Without Limits or Throttling SNYK-RUBY-RACK-10074187	649
	Relative Path Traversal SNYK-RUBY-RACK-9398129	649
	Denial of Service (DoS) SNYK-RUBY-RACK-3356639	589
	Denial of Service (DoS) SNYK-RUBY-RACK-6274385	589
	Improper Output Neutralization for Logs SNYK-RUBY-RACK-8720151	569
	Improper Output Neutralization for Logs SNYK-RUBY-RACK-9058602	559
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-RACK-3237233	479
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-RACK-3237237	479
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-RACK-3237240	479
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-RACK-3360233	479
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-RACK-6274383	479
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-RACK-6274384	479

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[!IMPORTANT]

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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