[nginx] The following signatures were invalid

На Debian 11 (Bullseye) при обновлении списка пакетов через apt-get update получаем ошибку:

Err:6 http://nginx.org/packages/debian bullseye InRelease
The following signatures were invalid: EXPKEYSIG ABF5BD827BD9BF62 nginx signing key <signing-key@nginx.com>

Решение – загружаем новый ключ:

curl -O https://nginx.org/keys/nginx_signing.key && apt-key add ./nginx_signing.key