[Snyk] Security upgrade rack from 1.6.4 to 2.2.20

[ryanmcmorrowsnyk]

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

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This major version upgrade introduces significant breaking changes to the Rack specification, affecting the contract between servers, middleware, and applications.

Highlights:

• Header Keys: Response header keys must now be lowercase. Uppercase keys are no longer supported. [5]
• Streaming Body: The response body can now be a callable object that responds to #call for streaming, which is a change from the previous #each enumerable interface. [5]
• Response Structure: The response status must be an integer, and the headers hash must be unfrozen. [5]

Source: Rack Changelog
Recommendation: This upgrade requires careful validation. Review all middleware and application code that interacts with response headers or the response body to ensure compatibility with the Rack 2.x specification.

Notice 🤖: This content was generated using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.
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Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Allocation of Resources Without Limits or Throttling SNYK-RUBY-RACK-13535097	167

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