Add missing optional field to JsonMetadata type (#502)

Author: nicholas-ewasiuk

.changeset/nine-monkeys-share.md

@@ -0,0 +1,5 @@
+---
+"@metaplex-foundation/js": patch
+---
+
+Add missing optional field to JsonMetadata type

packages/js/src/plugins/nftModule/models/JsonMetadata.ts

@@ -5,6 +5,7 @@ export type JsonMetadata<Uri = string> = {
   description?: string;
   seller_fee_basis_points?: number;
   image?: Uri;
+  animation_url?: Uri;
   external_url?: Uri;
   attributes?: Array<{
     trait_type?: string;