Hey, this is the future packager for MSYS2. I uploaded a new database recently and reverted it after a few hours due to reports of issues. I even received one issue from a concerned vcpkg user. Due to a bunch of stuff coming together, we don't see a way to make the upgrade path work cleanly for old installations (from an old installer or just not upgraded for a while). Therefore I suggest that vcpkg switch to the current MSYS2 installer which should have the correct keyring. How realistic is this for you?

[notifying @lazka]