[Snyk] Security upgrade sinatra from 3.2.0 to 4.0.0

[geekswagg]

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

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Allocation of Resources Without Limits or Throttling SNYK-RUBY-RACK-13535097	649

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🦉 Allocation of Resources Without Limits or Throttling

[Copilot]

Pull Request Overview

This PR updates Ruby gem dependencies, primarily upgrading Sinatra from version 3.x to 4.x along with associated dependencies. However, there is a critical inconsistency between the Ruby version specified in .ruby-version and the version locked in Gemfile.lock.

• Sinatra upgraded from 3.2.0 to 4.2.1 with a minimum version constraint of >= 4.0.0
• Multiple dependency updates including rack (2.2.8.1 → 3.2.4), rack-protection (3.2.0 → 4.2.1), and thin (1.8.2 → 2.0.1)
• Ruby version in lockfile changed from 3.3.0p0 to 3.1.7p261, contradicting the .ruby-version file

Reviewed Changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
Gemfile	Adds minimum version constraint >= 4.0.0 to Sinatra dependency
Gemfile.lock	Updates all gem versions and their dependencies, but downgrades Ruby version specification

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