chore: update Flask-WTF
chore: update Flask-WTF

0xfoo/flask-todolist,rtzll/flask-todolist,rtzll/flask-todolist,polyfunc/flask-todolist,rtzll/flask-todolist,rtzll/flask-todolist,polyfunc/flask-todolist,0xfoo/flask-todolist,polyfunc/flask-todolist,0xfoo/flask-todolist