[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 from 1.x to 2.x introduces significant breaking changes.

Highlights:

• rackup Extraction: The rackup command, Rack::Server, and Rack::Handler have been removed from the rack gem and extracted into a new, separate rackup gem. You must now explicitly add gem 'rackup' to your Gemfile to run your application. [3, 10]
• SPEC Changes: The Rack specification was updated. Notably, response header keys can no longer contain uppercase characters, and rack.hijack_io has been removed. [3]

Source: Rack CHANGELOG
Recommendation: Add the rackup gem to your project dependencies and audit your application and middleware for compliance with the new header specifications.

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
	Information Exposure SNYK-RUBY-RACK-13524628	67

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