[Snyk] Fix for 12 vulnerabilities

[rubybrowncoat]

Snyk has created this PR to fix 12 vulnerabilities in the rubygems dependencies of this project.

Snyk changed the following file(s):

• Gemfile

⚠️ Warning

Failed to update the Gemfile.lock, please update manually before merging.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Deserialization of Untrusted Data SNYK-RUBY-ACTIVESUPPORT-569598	834
	Cross-site Request Forgery (CSRF) SNYK-RUBY-ACTIONPACK-569599	646
	Information Exposure SNYK-RUBY-ACTIONPACK-569600	646
	Cross-site Scripting (XSS) SNYK-RUBY-ACTIONVIEW-560837	646
	Denial of Service (DoS) SNYK-RUBY-ACTIONPACK-1290052	589
	Directory Traversal SNYK-RUBY-RACK-569066	589
	Directory Traversal SNYK-RUBY-TZINFO-2958048	589
	Information Exposure SNYK-RUBY-ACTIONPACK-1290051	586
	Cross-site Request Forgery (CSRF) SNYK-RUBY-ACTIONVIEW-569601	586
	Information Exposure SNYK-RUBY-RACK-538324	479
	Cross-site Scripting (XSS) SNYK-RUBY-ACTIONVIEW-632514	449
	Cross-site Scripting (XSS) SNYK-RUBY-NOKOGIRI-8453714	391

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• 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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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Denial of Service (DoS)
🦉 Cross-site Request Forgery (CSRF)
🦉 Cross-site Scripting (XSS)
🦉 More lessons are available in Snyk Learn