* OpenPGP could not be disabled for an account if a key was
previously configured
* Recipients were unable to decrypt some messages when the sender
had changed the message encryption from OpenPGP to S/MIME
* Contacts moved between CardDAV address books were not synced to
the new server
* CardDAV compatibility fixes for Google Contacts
MFSA 2021-
- renewed expired mozilla.keyring
OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaThunderbird?expand=0&rev=594
