fix(typing): resolve mypy errors in db models

gns3server/db/models/acl.py

@@ -29,7 +29,7 @@ class ACE(BaseTable):
     __tablename__ = "acl"
 
     ace_id = Column(GUID, primary_key=True, default=generate_uuid)
-    ace_type: str = Column(String)
+    ace_type = Column(String)
     path = Column(String)
     propagate = Column(Boolean, default=True)
     allowed = Column(Boolean, default=True)

gns3server/db/models/base.py

@@ -21,11 +21,10 @@ from fastapi.encoders import jsonable_encoder
 from sqlalchemy import Column, DateTime, func, inspect
 from sqlalchemy.types import TypeDecorator, CHAR, VARCHAR
 from sqlalchemy.dialects.postgresql import UUID
-from sqlalchemy.orm import as_declarative
+from sqlalchemy.orm import DeclarativeBase
 
 
-@as_declarative()
-class Base:
+class Base(DeclarativeBase):
     def asdict(self):
 
         return {c.key: getattr(self, c.key) for c in inspect(self).mapper.column_attrs}