Security update for Mozilla based packages (important)

This update for Mozilla Firefox, Thunderbird, and NSS fixes the following issues: Mozilla Firefox was updated to 52.2esr boo1043960 MFSA 2017-16: CVE-2017-5472 bmo1365602 Use-after-free using destroyed node when regenerating trees CVE-2017-7749 bmo1355039 Use-after-free during docshell reloading...