uui-json-schema-ref-parser v9.0.9

Forked from original repository. Fixed objects extension that were cached during dereferencing. Reason why pull request was not made is because: that extended objects are not allowed by the JSON Schema or JSON Reference specs. The json-schema-ref-parser library only supports them for backward-compatibility, and it's possible that this support will be removed at some point in the future to bring this library inline with the official spec (https://github.com/APIDevTools/json-schema-ref-parser/issues/92).