Updated thunderbird packages fix security vulnerability

Sandbox escape via installation of malicious language pack. (CVE-2019-9811) Script injection within domain through inner window reuse. (CVE-2019-11711) Cross-origin POST requests can be made with NPAPI plugins by following 308 redirects. (CVE-2019-11712) Use-after-free with HTTP/2 cached stream. (CVE-2019-11713) Empty or malformed p256-ECDH public keys may trigger a segmentation fault. (CVE-2019-11729) HTML parsing error can contribute to content XSS. (CVE-2019-11715) Caret character improperly escaped in origins. (CVE-2019-11717) Out-of-bounds read when importing curve25519 private key. (CVE-2019-11719) Same-origin policy treats all files in a directory as having the same-origin. (CVE-2019-11730) Memory safety bugs fixed in Firefox 68, Firefox ESR 60.8 and Thunderbird 60.8. (CVE-2019-11709) Enigmail 2.0.12 sets the default keyserver to keys.openpgp.org in order to mitigate the SKS Keyserver Network Attack.