I haven't yet dug into where this is coming from, any it's probably not
anything to worry about.
But - FYI - I noticed that on my Ubuntu 24.04 machine, I always get the
following notice when I run apt update:
N: Skipping acquire of configured file 'main/binary-i386/Packages' as
repository 'https://apt.postgresql.org/pub/repos/apt noble-pgdg
InRelease' doesn't support architecture 'i386'
-Jeremy