Make 8.x-7.x Drupal 11 compatible

Here is a first stab at a patch.

Thanks @alberto56!

I've created a merge request from the patch in #2 ✨ Make 8.x-7.x Drupal 11 compatible Active (the patch didn't apply cleanly in tests/modules/elasticsearch_test/elasticsearch_test.info.yml so I just re-created the change).

I believe tests are failing on the branch so I don't really expect them to pass here, but let's see what Testbot thinks anyway.

Thanks, @mparker17, highly appreciated. The test are in effect failing. Specifically, in https://git.drupalcode.org/project/elasticsearch_connector/-/jobs/4435313 we are seeing:

PHP Fatal error: Declaration of Drupal\Tests\elasticsearch_connector\Kernel\ClusterSchemaTest::setUp() must be compatible with Drupal\KernelTests\KernelTestBase::setUp(): void in /builds/project/elasticsearch_connector/tests/src/Kernel/ClusterSchemaTest.php on line 30

I will therefore set this ticket to Needs work.

The failing tests seem to be due to another issue, 🐛 Automated tests seem to be failing on 8.x-7.x branch Active .