Add support for ActiveRecord 8.0 and 8.1

[pjmartorell]

Summary

This PR adds support for ActiveRecord 8.0 and 8.1 to the migration-lock-timeout gem.
Resolves #22

Changes

Gemspec

• Updated ActiveRecord dependency constraint from < 8.0 to < 8.2
• This allows support for ActiveRecord 8.0.x and 8.1.x releases

Test Configurations

Added 4 new Appraisal configurations:

• activerecord_8_0 - Testing with ActiveRecord 8.0.x
• activerecord_8_0_with_strong_migrations - Testing 8.0 with strong_migrations integration
• activerecord_8_1 - Testing with ActiveRecord 8.1.x
• activerecord_8_1_with_strong_migrations - Testing 8.1 with strong_migrations integration

Documentation

• Updated CHANGELOG.md to document new Rails 8.0 and 8.1 support

Testing

All tests pass successfully across all new configurations:

Configuration	ActiveRecord Version	Test Results
activerecord_8_0	8.0.3	✅ 13 examples, 0 failures
activerecord_8_0_with_strong_migrations	8.0.3	✅ 13 examples, 0 failures
activerecord_8_1	8.1.0	✅ 13 examples, 0 failures
activerecord_8_1_with_strong_migrations	8.1.0	✅ 13 examples, 0 failures

Compatibility Analysis

The gem's implementation uses only stable ActiveRecord APIs that have remained unchanged in Rails 8.x:

• ActiveRecord::Migration prepending and extending
• execute method for SQL commands
• disable_ddl_transaction attribute
• Migration direction checking (:up vs :down)

Rails 8.0 and 8.1 introduce no breaking changes to these migration APIs, ensuring full compatibility.

Version Support Matrix

With this change, the gem now supports:

• ✅ ActiveRecord 6.1.x
• ✅ ActiveRecord 7.0.x
• ✅ ActiveRecord 7.1.x
• ✅ ActiveRecord 8.0.x ⭐ NEW
• ✅ ActiveRecord 8.1.x ⭐ NEW

[Copilot]

Pull Request Overview

This PR extends the gem's ActiveRecord compatibility to include Rails 8.0 and 8.1 by updating version constraints and adding corresponding test configurations.

Key Changes:

• Updated the ActiveRecord dependency upper bound from < 8.0 to < 8.2
• Added four new Appraisal test configurations for ActiveRecord 8.0 and 8.1 (with and without strong_migrations)
• Documented the new version support in the changelog

Reviewed Changes

Copilot reviewed 7 out of 18 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
migration-lock-timeout.gemspec	Updated ActiveRecord version constraint to allow 8.0 and 8.1
Appraisals	Added test configurations for ActiveRecord 8.0 and 8.1
gemfiles/activerecord_8_0.gemfile	Generated gemfile for ActiveRecord 8.0 testing
gemfiles/activerecord_8_0_with_strong_migrations.gemfile	Generated gemfile for ActiveRecord 8.0 with strong_migrations
gemfiles/activerecord_8_1.gemfile	Generated gemfile for ActiveRecord 8.1 testing
gemfiles/activerecord_8_1_with_strong_migrations.gemfile	Generated gemfile for ActiveRecord 8.1 with strong_migrations
CHANGELOG.md	Added entry documenting Rails 8.0 and 8.1 support

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