Ensure backwards compatiblity

[anakinj]

Description

Ensure we run the test suite on a older openssl gem version (2.0).

Checklist

Before the PR can be merged be sure the following are checked:

• There are tests for the fix or feature added/changed
• A description of the changes and a reference to the PR has been added to CHANGELOG.md. More details in the CONTRIBUTING.md

[Copilot]

Pull Request Overview

This PR ensures backwards compatibility by running the test suite on an older OpenSSL gem version and updating related configurations.

• Implements a skip mechanism in tests when RSA-PSS support is missing
• Removes tests that raise errors for PS algorithms with newer OpenSSL versions
• Adjusts the gemfile, RuboCop configuration, and workflow Ruby version to support the legacy OpenSSL gem

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
spec/jwt/jwt_spec.rb	Adds skip checks for RSA-PSS support and removes error tests for PS algorithms
spec/jwt/jwa/ps_spec.rb	Adds skip check for RSA-PSS support in PS-specific tests
lib/jwt/error.rb	Removes the RequiredDependencyError, aligning with backwards compatibility changes
gemfiles/openssl.gemfile	Downgrades the OpenSSL gem version constraint to support older versions
.rubocop.yml	Disables the Naming/PredicateMethod rule to align with compatibility requirements
.github/workflows/test.yml	Downgrades the Ruby version for one test matrix from 3.0 to 2.5 to reflect compatibility needs

Comments suppressed due to low confidence (4)

spec/jwt/jwt_spec.rb:204

• [nitpick] Consider adding a comment explaining why tests for PS algorithms in the error branch were removed, clarifying the intent for backwards compatibility.

if Gem::Version.new(OpenSSL::VERSION) >= Gem::Version.new('2.1')

lib/jwt/error.rb:7

• Verify that removing the RequiredDependencyError does not negatively affect error handling in parts of the code that rely on this exception.

class RequiredDependencyError < StandardError; end

gemfiles/openssl.gemfile:5

• Ensure that constraining the openssl gem to versions '< 2.0' aligns with the intended compatibility and does not inadvertently exclude required features.

gem "openssl", "< 2.0"

.github/workflows/test.yml:53

• Downgrading the Ruby version for this test matrix could impact compatibility and behavior of modern syntax features; please ensure the test suite comprehensively covers potential version-specific issues.

ruby: "2.5"

[Copilot]

[nitpick] Disabling the Naming/PredicateMethod rule might mask potential naming consistency issues; consider documenting the rationale for this change.

Suggested change

	Enabled: false
	Enabled: false # Disabled to allow flexibility in naming methods that do not strictly follow predicate conventions.