Fix PHP 8.4 deprecations (#163) * Fix PHP 8.4 deprecations * Test against PHP 8.4 * Change min PHP requirement to 7.1.x

Fix phpdoc for JsonSchena::setType() (#154) The type definition in `setType` method can be updated as the property itself accepts `string` too

Update CHANGELOG.md 

Update CHANGELOG.md 

Refresh composer.lock with new dependency (#134) 

Patch phpunit to allow testing in PHP 8.1 (#131) 

Move invalid value exception data to dedicated fields (#128) 

Update CHANGELOG.md 

Make InvalidRef a critical exception to avoid suppression (#122) 

Fail validation on invalid reference exception (#121)