Flake8 fix on api/models/annotations_lookup.py

Author: VinLau

api/models/annotations_lookup.py

@@ -19,4 +19,4 @@ class AtAgiLookup(db.Model):
 
     probeset: db.Mapped[str] = db.mapped_column(db.String(60), primary_key=True, nullable=False)
     agi: db.Mapped[str] = db.mapped_column(db.String(30), primary_key=True, nullable=False)
-    date: db.Mapped[datetime] = db.mapped_column(db.Date, primary_key=True, nullable=False)
+    date: db.Mapped[datetime] = db.mapped_column(db.Date, primary_key=True, nullable=False)