Added required arguments

Added required arguments ([see docs](/https://flask-jwt-extended.readthedocs.io/en/stable/api/#flask_jwt_extended.JWTManager.needs_fresh_token_loader)) to avoid `TypeError: token_not_fresh_callback() takes 0 positional arguments but 2 were given` error.

Author: LUS24

project/using-flask-smorest/app.py

@@ -81,7 +81,7 @@ def missing_token_callback(error):
 
 
 @jwt.needs_fresh_token_loader
-def token_not_fresh_callback():
+def token_not_fresh_callback(jwt_header, jwt_payload):
     return (
         jsonify(
             {"description": "The token is not fresh.", "error": "fresh_token_required"}
@@ -91,7 +91,7 @@ def token_not_fresh_callback():
 
 
 @jwt.revoked_token_loader
-def revoked_token_callback():
+def revoked_token_callback(jwt_header, jwt_payload):
     return (
         jsonify(
             {"description": "The token has been revoked.", "error": "token_revoked"}