Updated thunderbird packages fix security vulnerabilities

The updated packages fix a security vulnerabilities: Out of bounds reads in sctp_load_addresses_from_init. (CVE-2019-20503) Use-after-free when removing data about origins. (CVE-2020-6805) BodyStream::OnInputStreamReady was missing protections against state confusion. (CVE-2020-6806) Use-after-free in cubeb during stream destruction. (CVE-2020-6807) Devtools’ ‘Copy as cURL’ feature did not fully escape website-controlled data, potentially leading to command injection. (CVE-2020-6811) The names of AirPods with personally identifiable information were exposed to websites with camera or microphone permission. (CVE-2020-6812) Memory safety bugs fixed in Thunderbird 68.6. (CVE-2020-6814)