openSUSE Leap 15.3: 2021:2003-1 Important: MozillaThunderbird Issues

This update for MozillaThunderbird fixes the following issues:

Mozilla Thunderbird 78.11 (bsc#1186696)

Security issues fixed:

- CVE-2021-29964: Out of bounds-read when parsing a `WM_COPYDATA` message

- CVE-2021-29967: Memory safety bugs fixed in Thunderbird 78.11

General improvements:

- 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

- Folder pane had no clear indication of focus on macOS