This update for MozillaThunderbird fixes the following issues:

Mozilla Thunderbird was updated to 60.7.2 / MFSA 2019-20 (boo#1138872):
  * CVE-2019-11707: Type confusion in Array.pop
  * CVE-2019-11708: sandbox escape using Prompt:Open

Mozilla Thunderbird was updated to 60.7.1 / MFSA 2019-17 (boo#1137595):
* CVE-2019-11703: Heap buffer overflow in icalparser.c
* CVE-2019-11704: Heap buffer overflow in icalvalue.c
* CVE-2019-11705: Stack buffer overflow in icalrecur.c
* CVE-2019-11706: Type confusion in icalproperty.c

Also fixed: No prompt for smartcard PIN when S/MIME signing is used

Mozilla Thunderbird was updated to 60.7.0 / MFSA 2019-15 (boo#1135824):

* Attachment pane of Write window no longer focussed when attaching
  files using a keyboard shortcut

* CVE-2019-9815: Disable hyperthreading on content JavaScript threads on macOS
* CVE-2019-9816: Type confusion with object groups and UnboxedObjects
* CVE-2019-9817: Stealing of cross-domain images using canvas
* CVE-2019-9818 (Windows only): Use-after-free in crash generation server
* CVE-2019-9819: Compartment mismatch with fetch API
* CVE-2019-9820: Use-after-free of ChromeEventHandler by DocShell
* CVE-2019-11691: Use-after-free in XMLHttpRequest
* CVE-2019-11692: Use-after-free removing listeners in the event listener manager
* CVE-2019-11693: Buffer overflow in WebGL bufferdata on Linux
* CVE-2019-7317: Use-after-free in png_image_free of libpng library
* CVE-2019-9797: Cross-origin theft of images with createImageBitmap
* CVE-2018-18511: Cross-origin theft of images with ImageBitmapRenderingContext
* CVE-2019-11694: Uninitialized memory memory leakage in Windows sandbox
* CVE-2019-11698: Theft of user history data through drag and drop of hyperlinks to and from bookmarks
* CVE-2019-5798: Out-of-bounds read in Skia
* CVE-2019-9800: Memory safety bugs fixed in Firefox 67 and Firefox ESR 60.7

- Disable building with LTO (boo#1133267).