Install firefox with apt instead of snap

 cf: https://www.omgubuntu.co.uk/2022/04/how-to-install-firefox-deb-apt-ubuntu-22-04

ATTN: Must BE backup $HOME/.mozilla FIRST! New firefox will delete .mozilla

• sudo snap remove firefox
• sudo add-apt-repository ppa:mozillateam/ppa
• echo ' Package: * Pin: release o=LP-PPA-mozillateam Pin-Priority: 1001 ' | sudo tee /etc/apt/preferences.d/mozilla-firefox
• echo 'Unattended-Upgrade::Allowed-Origins:: "LP-PPA-mozillateam:${distro_codename}";' | sudo tee /etc/apt/apt.conf.d/51unattended-upgrades-firefox
• sudo apt install firefox