Update and upgrade issue

Hello

I have problem in Update and upgrade Kali Linux 2020.4

can you help me please?

I write:

1- echo "deb http://http.kali.org/kali kali-rolling main non-free contrib" | sudo tee /etc/apt/sources.list

2-sudo apt update && sudo apt -y full-upgrade


The Result:

E: Failed to fetch http://http.kali.org/kali/dists/kali-rolling/InRelease 403 Forbidden [IP: 192.99.200.113 80]
E: The repository 'http://http.kali.org/kali kali-rolling InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.