Fix auth mechanism 2/3

[Bischoff]

When running the command

$ curl http://localhost/ -H "Content-Type:application/json" -H 'X-Auth-Token:<user token>'

with the user token provided by the CreateToken() function, one systematically gets:

HTTP status: 401, body: {"overallRC": 400, "rc": 400, "rs": 401, "modID": 120, "output": "", "errmsg": "This server could not verify that you are authorized to access the document you requested. Either you supplied the wrong credentials (e.g., bad password), or your browser does not understand how to supply the credentials required."}

The logs in DEBUG mode show the message:

[2023-12-12 22:16:57] [DEBUG] token not valid

After debugging, it appears that the function jwt.decode() now needs a third argument with the decoding algorithms, as shown by this small python program:

import jwt

key = "zvX2mFxuj8HcrYkAacLReV0RTQ0K5IIEighOR9F8AG"
encoded = jwt.encode({ "exp": 1702422356 }, key)
print(encoded)
# BAD:
jwt.decode(encoded, key)
# GOOD:
# jwt.decode(encoded, key, algorithms="HS256")

This PR prevents that decoding exception when using authentication tokens, by adding this missing parameter.

[bjhuangr]

Thanks for the fixing

[Bischoff]

Thanks for the fixing

Thanks for the review and merge.