6 files declare their use of ResolverRegistryInterface in GraphQL 8.4

ComposableSchemaExampleExtension.php in examples/graphql_composable/src/Plugin/GraphQL/SchemaExtension/ComposableSchemaExampleExtension.php

ExampleSchemaExtension.php in examples/graphql_example/src/Plugin/GraphQL/SchemaExtension/ExampleSchemaExtension.php

SchemaExtensionPluginInterface.php in src/Plugin/SchemaExtensionPluginInterface.php

SchemaPluginInterface.php in src/Plugin/SchemaPluginInterface.php

SdlSchemaPluginBase.php in src/Plugin/GraphQL/Schema/SdlSchemaPluginBase.php

Server.php in src/Entity/Server.php