Drupal 11 compatibility

[byrond]

D11 uses Symfony 7.0. Update the Symfony version constraint to also allow version 7.0 and higher.

Also

• Fixes an issue on CircleCI where it was trying to install a version of CTools that does not support D8.
• Fixes an issue on AppVeyor where Composer project creation was failing due to plugins not being allowed.

[mglaman]

Wow, thanks! If this is ready I can merge

[byrond]

I believe it finally is! :)

Is this script still useful on D9+ sites? (At a minimum, it fixes some of the CI issues.)

[mglaman]

I've been recommending folks use PHPStan directly, especially since adding drupal/core-dev sets up basic configuration

[byrond]

If this won't need to be installed on D11, feel free to pull out the Symfony version constraint updates. We can look into just using PHPStan directly and remove it from our build tool-chain for the D11 update.

[mglaman]

Oh, I think others still use this and your PR is valuable.

In my FLDC talk I explained how to use PHPStan directly: http://2024.fldrupal.camp/sites/default/files/2024-02/Tighten%20up%20your%20Drupal%20code%20using%20PHPStan%20-%20FLDC%202024/index.pdf