* bugfixes:
https://www.thunderbird.net/en-US/thunderbird/78.9.0/releasenotes
MFSA 2021-12 (boo#1183942)
* CVE-2021-23981 (bmo#1692832)
Texture upload into an unbound backing buffer resulted in an
out-of-bound read
* MOZ-2021-0002 (bmo#1691547)
Angle graphics library out of date
* CVE-2021-23982 (bmo#1677046)
Internal network hosts could have been probed by a malicious
webpage
* CVE-2021-23984 (bmo#1693664)
Malicious extensions could have spoofed popup information
* CVE-2021-23987 (bmo#1513519, bmo#1683439, bmo#1690169, bmo#1690718)
Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9
- cleaned up and fixed mozilla.sh.in for wayland (boo#1177542)
OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaThunderbird?expand=0&rev=582
* OpenPGP: Improved support for encrypting with subkeys
* OpenPGP message status icons were not visible in message header pane
* OpenPGP Key Manager was missing from Tools menu on macOS
* Creating a new calendar event did not require an event title
- remove python2 dependencies for TW
- support wayland mode/autodetection in startup wrapper
- replace some Requires to use requires_ge macro where appropriate
- improve langpack build (as already used for Firefox)
- add ccache statistics output to build
OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaThunderbird?expand=0&rev=555