Adjust the wordpress-stubs dependency version range so version 7.0 can be used

[johnbillion]

Attempting to install this package alongside php-stubs/wordpress-stubs at version 7.0.0 results in an unresolvable dependency, because this package depends on php-stubs/wordpress-stubs with ^6.6.2, which 7.0.0 does not satisfy.

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires szepeviktor/phpstan-wordpress 2.0.3 -> satisfiable by szepeviktor/phpstan-wordpress[v2.0.3].
    - szepeviktor/phpstan-wordpress v2.0.3 requires php-stubs/wordpress-stubs ^6.6.2 -> found php-stubs/wordpress-stubs[v6.6.2, ..., v6.9.4] but it conflicts with your root composer.json require (7.0.0).

This fixes that.

[szepeviktor]

Thank you.