[Snyk] Security upgrade rack from 1.6.4 to 2.2.19

[svc-ast-gh-snyk3]

Snyk has created this PR to fix 3 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.

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This major version upgrade from Rack 1.x to 2.x introduces significant breaking changes to the Rack specification, affecting how responses are handled and removing deprecated APIs.

Highlights:

• Response Headers & Body: Response header keys must now be lowercase, and values can be an array for multiple values instead of using \n. The response body no longer supports #each for middleware; a new #call interface is used for streaming.
• Hijacking API: The rack.hijack_io API has been completely removed. The rack.hijack? and rack.hijack APIs are now independently optional.

Source: Rack Changelog
Recommendation: Review all middleware and application code that directly constructs or modifies Rack response arrays (status, headers, body) to ensure compatibility with the new specification. Pay special attention to response header formatting and body streaming logic.

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-13378928	721
	Allocation of Resources Without Limits or Throttling SNYK-RUBY-RACK-13378930	721
	Allocation of Resources Without Limits or Throttling SNYK-RUBY-RACK-13378932	721

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🦉 Allocation of Resources Without Limits or Throttling