Your instructions to remove the old and install the new key lead to the same old key, at least for ubuntu2204/x86_64
Can you please correct your article under:
Chain of commands instructed there for Ubuntu:
$ sudo apt-key del 7fa2af80
$ sudo dpkg -i cuda-keyring_1.0-1_all.deb
triggers then the result:
Selecting previously unselected package cuda-keyring.
(Reading database … 254715 files and directories currently installed.)
Preparing to unpack cuda-keyring_1.0-1_all.deb …
Unpacking cuda-keyring (1.0-1) …
Setting up cuda-keyring (1.0-1) …
A deprecated public CUDA GPG key appear to be installed.
To remove the key, run this command:
sudo apt-key del 7fa2af80