Update minimum Ruby version to 3.2 and bump dependencies

[ericproulx]

Update minimum Ruby version to 3.2 and bump dependencies

Summary

This PR updates the minimum required Ruby version from 3.1 to 3.2, updates related dependencies, and includes code cleanup improvements.

Changes

Ruby Version Requirements

• Minimum Ruby version: Updated from >= 3.1 to >= 3.2 in grape.gemspec
• Documentation: Updated README.md to reflect Ruby 3.2+ requirement
• CI/CD: Removed Ruby 3.1 from GitHub Actions test matrix in both test.yml and edge.yml
• RuboCop: Updated target Ruby version from 3.1 to 3.2 in .rubocop.yml

Dependency Updates

• ActiveSupport: Updated minimum version from >= 7.1 to >= 7.2 in grape.gemspec
• RuboCop: Updated from 1.81.7 to 1.82.1 in Gemfile
• rubocop-rspec: Updated from 3.8.0 to 3.9.0 in Gemfile

Code Improvements

• Removed unused dependency: Removed require 'set' from lib/grape.rb (no longer needed)
• Modern Ruby syntax: Updated route_param method in lib/grape/dsl/routing.rb to use Ruby 3.2+ ** syntax instead of **options
• Code style: Fixed indentation in spec/grape/middleware/versioner/header_spec.rb
• RuboCop: Regenerated .rubocop_todo.yml with updated RuboCop version, reducing offense count from 6 to 2 for RSpec/ExpectActual

CI Configuration

• Removed Ruby 3.1 exclusions from test matrix (no longer needed since 3.1 is removed)
• Simplified edge workflow by removing Ruby 3.1 exclusion rules

Breaking Changes

⚠️ This is a breaking change - Grape will now require Ruby 3.2 or newer.

Applications using Grape with Ruby 3.1 will need to upgrade to Ruby 3.2+.

Testing

• All existing tests pass with Ruby 3.2+
• CI test matrix updated to test against Ruby 3.2, 3.3, 3.4, and 4.0
• Edge workflow continues to test against ruby-head, truffleruby-head, and jruby-head

Related

This change aligns with the Ruby community's move away from Ruby 3.1, which reached end-of-life status. Ruby 3.2 is the current stable version and provides better performance and features.

[github-actions]

Danger Report

No issues found.

View run

[dblock]

Let's update CHANGELOG and maybe UPGRADING?

[dblock]

Danger Report

Errors

• One of the lines below found in CHANGELOG.md doesn't match the expected format. Please make it look like the other lines, pay attention to version numbers, periods, spaces and date formats.
• Please put back the * Your contribution here. line into CHANGELOG.md.

Markdowns

* Your contribution here
does not include a pull request link, does not include an author link, is missing a period at the end of the line

* Your contribution here
does not include a pull request link, does not include an author link, is missing a period at the end of the line

View run

@ericproulx fix pls ^