php-opis-json-schema is a Composer metapackage that provides a single package for installing event-engine/php-json-schema along with opis/json-schema.
With your project relying on this package instead of manually adding opis/json-schema
to your project, your dependency update bot of your choice no longer bothers you with
an impossible upgrade to opis/json-schema v2.
Install using:
$ composer require netiul/php-opis-json-schema