Drupal 11 compatibility

@pfrenssen Are those items flagged against last 3.0.x version?

We're already using the module in D11 and it seems the mentioned lines do not contain the problematic code.

I did a fresh check against the latest dev version and there is only one task left.

pfrenssen → credited chris dart → .

Crediting @chris dart who did this work in 🌱 Roadmap to modernize code for D11 + PHP 8.3 Active .

@plopesc you're right, I still had this task on my to-do list, but in the meantime most of the issues are already solved!

I will also make sure the tests pass on Drupal 11.

All green on Drupal 10 and Drupal 11!!

Great job!

It seems that the MR has conflicts now, though.

Fixed the conflict and a new coding standards error that popped up.