I am using github actions with Ubuntu 18.04. Their hosted machines pre-install heroku CLI per https://github.com/actions/virtual-environments/blob/master/images/linux/Ubuntu1804-README.md. Starting today I am seeing problems with heroku during apt-get update:

https://github.com/lyft/envoy-mobile/pull/764/checks?check_run_id=520412970#step:3:83

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 30739094656B3CC5

I tried grabbing the key from a key server, but did not receive any data for 30739094656B3CC5

Any chance keys need to be updated on heroku's side similar to #497?