Resolved -
On Saturday, June 6th, the Codecov gpg public key located at keybase.io/codecovsecurity was absent. This caused widespread outages for users uploading with the Codecov - GitHub Action - CircleCI Orb - Bitrise Step
In order to quickly move and prevent further outages, the Codecov team deleted the `codecovsecurity` account and created `codecovsecops` with the same public gpg key. This key can be verified against any pre-existing CLI to prove it is the same key and also at about.codecov.io/security. The key location was updated in all of the above uploaders on the latest versions.
Jun 6, 13:00 UTC