fix problem in download.py when title has not been set

kontor-api/src/schema/media/actor.py

@@ -0,0 +1,10 @@
+from datetime import datetime
+
+from src.db.models.media import MediaActor
+from pydantic import BaseModel
+
+
+class MediaActorResponse(BaseModel):
+    id: str
+    name: str
+    url: str