Following the guide: https://support.mozilla.org/en-US/kb/install-firefox-linux#w_install-firefox-deb-package-for-debian-based-distributions I am getting E: Failed to fetch https://packages.mozilla.org/apt/dists/stable/InRelease 403 Forbidden [IP: 34.160.78.70 80] Even visiting the URL in a browser produces: Unauthenticated request. Unauthenticated requests do not have permission "artifactregistry.repositories.downloadArtifacts" on resource "projects/moz-fx-productdelivery-pr-38b5/locations/us/repositories/stable" (or it may not exist)