Fix PHPCR tests for PHPUnit 10

[GromNaN]

MockBuilder::addMethods() is deprecated in PHPUnit 10.1 https://github.com/sebastianbergmann/phpunit/issues/5320

To run the tests with PHPCR, I have to add this to composer.json:

        "doctrine/phpcr-odm": "^1.8",
        "jackalope/jackalope-fs": "*",

And run COMPOSER_ROOT_VERSION=1.99 composer update