Issue #3267703 by longwave, quietone, bbrala, phenaproxima, smustgrave: Deprecate RDF module

core/modules/rdf/rdf.info.yml

...odules/rdf/tests/src/Functional/CommentAttributesTest.php

...sts/src/Functional/EntityReferenceFieldAttributesTest.php

...ules/rdf/tests/src/Functional/FileFieldAttributesTest.php

...modules/rdf/tests/src/Functional/GetRdfNamespacesTest.php

...les/rdf/tests/src/Functional/ImageFieldAttributesTest.php

...df/tests/src/Functional/Jsonapi/JsonApiRegressionTest.php

...dules/rdf/tests/src/Functional/Jsonapi/RdfMappingTest.php

...s/src/Functional/Migrate/NoMultilingualReviewPageTest.php

...modules/rdf/tests/src/Functional/Migrate/Upgrade7Test.php

...tests/src/Functional/Node/NodeDisplayConfigurableTest.php

core/modules/rdf/tests/src/Functional/NodeAttributesTest.php

.../rdf/tests/src/Functional/Rest/RdfMappingJsonAnonTest.php

...tests/src/Functional/Rest/RdfMappingJsonBasicAuthTest.php

...df/tests/src/Functional/Rest/RdfMappingJsonCookieTest.php

...s/rdf/tests/src/Functional/Rest/RdfMappingXmlAnonTest.php

.../tests/src/Functional/Rest/RdfMappingXmlBasicAuthTest.php

...rdf/tests/src/Functional/Rest/RdfMappingXmlCookieTest.php

.../modules/rdf/tests/src/Functional/StandardProfileTest.php

...dules/rdf/tests/src/Functional/TaxonomyAttributesTest.php