PHPUnit 12 is not supported

[rvalitov]

Not possible to install this lib if using PHPUnit 12.

 Problem 1
    - Root composer.json requires php-mock/php-mock-phpunit * -> satisfiable by php-mock/php-mock-phpunit[0.1, 0.2, 0.3, 1.0.0, 1.1.0, 1.1.1, 1.1.2, 2.0.0, ..., 2.10.0].
    - php-mock/php-mock-phpunit[0.1, ..., 0.2] require phpunit/phpunit ^4 -> found phpunit/phpunit[4.0.0, ..., 4.8.36] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit 0.3 requires phpunit/phpunit ^4.0.0 -> found phpunit/phpunit[4.0.0, ..., 4.8.36] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit[1.0.0, ..., 1.1.2] require phpunit/phpunit ^4.0.0 || ^5.0.0 -> found phpunit/phpunit[4.0.0, ..., 4.8.36, 5.0.0, ..., 5.7.27] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit 2.0.0 requires phpunit/phpunit ^6 -> found phpunit/phpunit[6.0.0, ..., 6.5.14] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit 2.0.1 requires phpunit/phpunit ^6 <6.5 -> found phpunit/phpunit[6.0.0, ..., 6.4.4] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit[2.1.0, ..., 2.1.2] require phpunit/phpunit ^6 || ^7 -> found phpunit/phpunit[6.0.0, ..., 6.5.14, 7.0.0, ..., 7.5.20] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit 2.10.0 requires phpunit/phpunit ^6 || ^7 || ^8 || ^9 || ^10.0.17 || ^11 -> found phpunit/phpunit[6.0.0, ..., 6.5.14, 7.0.0, ..., 7.5.20, 8.0.0, ..., 8.5.41, 9.0.0, ..., 9.6.22, 10.0.17, ..., 10.5.45, 11.0.0, ..., 11.5.12] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit[2.2.0, ..., 2.5.0] require phpunit/phpunit ^6 || ^7 || ^8 -> found phpunit/phpunit[6.0.0, ..., 6.5.14, 7.0.0, ..., 7.5.20, 8.0.0, ..., 8.5.41] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit[2.6.0, ..., 2.6.1] require phpunit/phpunit ^6 || ^7 || ^8 || ^9 -> found phpunit/phpunit[6.0.0, ..., 6.5.14, 7.0.0, ..., 7.5.20, 8.0.0, ..., 8.5.41, 9.0.0, ..., 9.6.22] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit 2.7.0 requires phpunit/phpunit ^6 || ^7 || ^8 || ^9 || ^10 -> found phpunit/phpunit[6.0.0, ..., 6.5.14, 7.0.0, ..., 7.5.20, 8.0.0, ..., 8.5.41, 9.0.0, ..., 9.6.22, 10.0.0, ..., 10.5.45] but it conflicts with your root composer.json require (^12).
    - php-mock/php-mock-phpunit[2.7.1, ..., 2.9.0] require phpunit/phpunit ^6 || ^7 || ^8 || ^9 || ^10.0.17 -> found phpunit/phpunit[6.0.0, ..., 6.5.14, 7.0.0, ..., 7.5.20, 8.0.0, ..., 8.5.41, 9.0.0, ..., 9.6.22, 10.0.17, ..., 10.5.45] but it conflicts with your root composer.json require (^12).

[michalbundyra]

Done in #75