fixed incorrect typing issues

pkgs/clan-cli/clan_cli/webui/sql_models.py

@@ -1,7 +1,9 @@
-from sqlalchemy import Boolean, Column, ForeignKey, Integer, String, JSON
+from sqlalchemy import JSON, Column, ForeignKey, Integer
 from sqlalchemy.orm import relationship
+
 from .sql_db import Base
 
+
 class Producer(Base):
     __tablename__ = "producers"
 
@@ -10,6 +12,7 @@ class Producer(Base):
 
     repos = relationship("Repository", back_populates="producer")
 
+
 class Repository(Base):
     __tablename__ = "repositories"