https://bugs.winehq.org/show_bug.cgi?id=53356
--- Comment #16 from Ulf Zibis Ulf.Zibis@gmx.de --- Hi,
as I see now, it is not mandatory to host the key in /usr/share/keyrings/. It also could be in /etc/apt/trusted.gpg.d/, but then it must have the extension ".gpg" and then the "Signed-by" part in "winehq-jammy.sources" becomes obsolete. So renaming the key file to "winehq.gpg" would de-complicate things.