- Updated various package versions in composer.lock, including justinrainbow/json-schema, league/uri, and symfony components to their latest versions.
- Modified CI workflow to include PHP versions 8.1, 8.2, 8.3, and 8.4, and added support for PHPUnit versions 10, 11, and 12.
- Added `CoversClass` attributes to OpenAPISchemaValidatorTest and OpenAPISymfonySchemaValidatorTest for better test coverage reporting.

- Updated CI workflow to exclude incompatible PHPUnit versions for PHP 8.1 and 8.2.
- Changed Composer command from install to update for better dependency management.
- Removed unnecessary `@covers` annotations from OpenAPISymfonySchemaValidatorTest for cleaner code.

- Adjusted Symfony PHPUnit bridge version constraints in composer.json for compatibility.
- Removed outdated Symfony packages from composer.lock to streamline dependencies.
- Updated CI workflow to use the `-W` flag for requiring PHPUnit, ensuring all dependencies are updated accordingly.

- Updated PHPUnit version constraint in composer.json to ^12.0.
- Adjusted composer.lock to reflect changes in various dependencies, including downgrading PHPUnit-related packages to versions compatible with PHPUnit 10.
- Enhanced CI workflow to dynamically select the PHPUnit configuration file based on the version being used, improving compatibility and maintainability.

…mline testing setup.