SUSE-SU-2020:3528-1 Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues: TODO - Mozilla Thunderbird 78.5.0 new: OpenPGP: Added option to disable attaching the public key to a signed message bmo1654950 new: MailExtensions: 'composeattachments' context added to Menus API bmo1670822 new: MailExtensions: Menus...