Drupal 11 compatability

I have pushed a commit to the issue form and created a merge request.
As far as PHP Stan could find there was only one deprecated item that needed fix which necessitates;

core_version_requirement: ^10.3 || ^11

Uploaded patch here for ease of use

new patch can be found by clicking on the "plain diff" link in the issue fork section:
https://git.drupalcode.org/project/adminimal_theme/-/merge_requests/15.diff

cc @jonasanne

Tested on:
- Drupal 11.0.1
- PHP 8.3.10
- MySQL 8.0.19

Verified:
- Adminimal can be installed in "Appearance"
- Adminimal can be used as the Administration theme
- Adminimal settings can be view and saved (/admin/appearance/settings/adminimal_theme)
- Creating and using the custom "adminimal-custom.css" overrides works as expected
- Layout is the same as the Drupal 10 version
- Tested different admin pages including node edit, block layout, and media library with no regressions seen

RTBC +1

note to maintainers - this commit drops support for Drupal 9 and Drupal 10.2 or less:

https://git.drupalcode.org/issue/adminimal_theme-3460890/-/commit/44327e...

thank you

ajit dalal → made their first commit to this issue’s fork.

Is there any chance we can get this merged in and D11 compatible version released?