fix: do not keep the locking of PHPUnit

[misaert]

What:

Bug Fix

Description:

It seems since bb1a0b5, PestPHP locks the version of PHPUnit. I don't know if it is always useful but I guess we can remove it.

If we can't, so the constraint in "conflict" doesn't seem appropriate. Maybe fix the version in "require":

{
  "require": {
    "phpunit/phpunit": "12.5.8"
  }
}

Or accept the patches:

{
  "require": {
    "phpunit/phpunit": "~12.5.8"
  }
}

What is the right choice?

Thanks

Mika

Related:

• bb1a0b5