GHSA-GCJH-H69Q-9W9G cel-go: JSON Private Fields Exposed via NativeTypes and ParseStructTag

The function ext.NativeTypesParseStructTag"json" does not honour the encoding/json skip directive json:"-". Fields tagged json:"-" are registered in the CEL type system under the literal name "-" and are readable from any user-submitted CEL expression via dynobj"-". Additionally, newNativeTypes...