👷 Add Ruby version 3.4 to CI grid

[pimpin]

Why ?

Ruby 3.4 has been released and we want to cover up to date setups.

HOW ?

• Add Ruby 3.4 in test grid

[gemini-code-assist]

Summary of Changes

Hello @pimpin, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the couchbase-orm gem's dependencies by raising the minimum required Ruby version to 3.2 and the minimum Active Model version to 7.1. This change signals a move towards supporting more recent environments and potentially leveraging features available in newer Ruby and Active Model releases.

Highlights

• Minimum Ruby Version: Increased the minimum required Ruby version for the gem from 2.7 to 3.2.
• Active Model Dependency: Updated the minimum required Active Model dependency from >= 5.2 to >= 7.1.
• Test Matrix Updates (Implied): Based on the description, the test matrix has been updated to remove older Ruby versions (2.7, 3.1) and add newer ones (3.4) to align with the new minimum requirement, although these changes are not visible in the provided patch.

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[gemini-code-assist]

Code Review

This pull request updates the couchbase-orm.gemspec to require Ruby version >= 3.2.0 (previously >= 2.7.0) and Active Model version >= 7.1 (previously >= 5.2). These are significant updates that drop support for several older versions of Ruby and Active Model, constituting breaking changes for users of this gem. My review comments highlight the importance of clearly communicating these breaking changes in release notes and any relevant documentation. Additionally, given the magnitude of these dependency changes, consider if a major version bump for the couchbase-orm gem itself (e.g., from 2.0.4 to 3.0.0) is warranted to signal these breaking changes to your users, following semantic versioning principles.