Keys missing in Ubuntu images

I’m using the machine executor with the ubuntu-1604:201903-01 image. It started failing constantly a little while ago with:

W: GPG error: http://dl.google.com/linux/chrome/deb stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 78BD65473CB3BD13
E: The repository 'http://dl.google.com/linux/chrome/deb stable InRelease' is not signed.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://cli-assets.heroku.com/apt ./ InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5DC22404A6F9F1CA

Exited with code exit status 100

Can we get that image fixed?

@kyrofa This issue is likely resolved in a new version of the image, could you try using ubuntu-1604:202004-01 instead?

I’m trying now, but I must admit that I don’t see the logic in not fixing a broken image. My CI was working fine, now it’s broken despite my making no changes, and you’re putting the onus on me to fix it. To be frank, it’s not appreciated.