feat: use custom type to handle existing naive datetimes

app/portal/static.py

@@ -1,18 +1,20 @@
 import logging
-from typing import Optional, List, Any
+from typing import Any, List, Optional
 
 import sqlalchemy.exc
-from flask import flash, redirect, url_for, render_template, Response, Blueprint, current_app
+from flask import (Blueprint, Response, current_app, flash, redirect,
+                   render_template, url_for)
 from flask.typing import ResponseReturnValue
 from flask_wtf import FlaskForm
 from sqlalchemy import exc
-from wtforms import StringField, SelectField, SubmitField, BooleanField, FileField
+from wtforms import (BooleanField, FileField, SelectField, StringField,
+                     SubmitField)
 from wtforms.validators import DataRequired
 
 from app.brm.static import create_static_origin
 from app.models.base import Group
 from app.models.cloud import CloudAccount, CloudProvider
-from app.models.mirrors import StaticOrigin, Origin
+from app.models.mirrors import Origin, StaticOrigin
 from app.portal.util import response_404, view_lifecycle
 
 bp = Blueprint("static", __name__)