Deref on array

[Jusduil]

When we have a "$ref" inside an array, this isn't expended.

e.g. from https://github.com/json-schema-org/json-schema-spec/blob/2020-12/schema.json

    "allOf": [
        {"$ref": "meta/core"},
        {"$ref": "meta/applicator"},
        {"$ref": "meta/unevaluated"},
        {"$ref": "meta/validation"},
        {"$ref": "meta/meta-data"},
        {"$ref": "meta/format-annotation"},
        {"$ref": "meta/content"}
    ],