PHPUnit - Package sebastian/resource-operations is abandoned, you should avoid using it. No replacement was suggested.

ebastianbergmann: This is not a bug. sebastian/resource-operations will not be changed anymore. PHPUnit 8.5 and PHPUnit 9.5 still depend on it to provide a functionality that nobody really uses (which is the reason why it was removed from PHPUnit 10). Do not worry about it, simply ignore the warning.