[Snyk] Security upgrade rack from 1.6.4 to 2.2.22

[ryanmcmorrowsnyk]

Snyk has created this PR to fix 2 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
	Cross-site Scripting (XSS) SNYK-RUBY-RACK-15307670	135
	Exposure of Information Through Directory Listing SNYK-RUBY-RACK-15307669	89

Breaking Change Risk

Notice: This assessment is enhanced by AI.

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🦉 Cross-site Scripting (XSS)

[ryanmcmorrowsnyk]

This major version upgrade from Rack 1.x to 2.x introduces significant breaking changes that require developer action.

Key Breaking Changes:

• Rack::Session Extracted: All session-related middleware (e.g., Rack::Session::Cookie, Rack::Session::Pool) has been moved to a separate rack-session gem. Applications using Rack for session management must add gem 'rack-session' to their Gemfile.
• rackup Command Extracted: The rackup command, Rack::Server, and related handlers have been moved to a new rackup gem. To run your application server, you must now add gem 'rackup' to your Gemfile.
• Request Body (rack.input) Not Rewindable: The rack.input stream is no longer guaranteed to be rewindable by default. If your application or middleware needs to read the request body multiple times, you must now include the Rack::RewindableInput middleware.
• Hijack API Changes: The rack.hijack_io interface has been removed.

Recommendation:
This upgrade requires code and dependency modifications. Before merging, ensure you have added the rack-session and rackup gems to your project's Gemfile if you use those features. Thoroughly test any middleware that reads the request body to ensure compatibility with the non-rewindable input stream.

Source: Rack Upgrade Guide, Changelog

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