fix update collection bug

lib/api/controllers/collections/collectionId/updateCollectionById.ts

@@ -51,17 +51,18 @@ export default async function updateCollection(
       where: {
         id: collectionId,
       },
-
       data: {
         name: data.name.trim(),
         description: data.description,
         color: data.color,
         isPublic: data.isPublic,
-        parent: {
+        parent: data.parentId
+          ? {
               connect: {
-            id: data.parentId || undefined,
-          },
+                id: data.parentId,
               },
+            }
+          : undefined,
         members: {
           create: data.members.map((e) => ({
             user: { connect: { id: e.user.id || e.userId } },