Добавить открытый ключ репозитория
wget -nv http://download.opensuse.org/repositories/server:/eGroupWare/xUbuntu_22.04/Release.key -O - | sudo apt-key add -
cd /etc/apt
sudo cp trusted.gpg trusted.gpg.d
wget -nv http://download.opensuse.org/repositories/server:/eGroupWare/xUbuntu_22.04/Release.key -O - | sudo apt-key add -
cd /etc/apt
sudo cp trusted.gpg trusted.gpg.d