Issue #3431488 by jsacksick: D11 compatibility.

.gitlab-ci.yml

composer.json

...sonapi_search_api_facets/jsonapi_search_api_facets.module

...cets/src/EventSubscriber/AddSearchMetaEventSubscriber.php

...i_facets/src/EventSubscriber/SearchApiQueryPreExecute.php

...i_facets/src/Plugin/facets/facet_source/JsonApiFacets.php

...earch_api_facets/tests/src/Functional/IndexFacetsTest.php

phpstan-baseline.neon

src/Query/Filter.php

src/Resource/IndexResource.php

src/Routing/Routes.php

tests/src/Functional/IndexResourceTest.php

tests/src/Unit/RoutesTest.php