Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues: MozillaThunderbird was updated to 68.6.0 ESR (MFSA 2020-10 bsc#1166238) - CVE-2020-6805: Fixed a use-after-free when removing data about origins - CVE-2020-6806: Fixed improper protections against state confusion - CVE-2020-6807: Fixed a use-after-free in cubeb during stream destruction - CVE-2020-6811: Fixed an issue where copy as cURL' feature did not fully escape website-controlled data potentially leading to command injection - CVE-2019-20503: Fixed out of bounds reads in sctp_load_addresses_from_init - CVE-2020-6812: Fixed an issue where the names of AirPods with personally identifiable information were exposed to websites with camera or microphone permission - CVE-2020-6814: Fixed multiple memory safety bugs