MGASA-2019-0190 Updated thunderbird packages fix security vulnerabilities

Updated thunderbird packages fixes bugs and security vulnerabilities: Cross-origin theft of images with ImageBitmapRenderingContext. CVE-2018-18511 Out-of-bounds read in Skia. CVE-2019-5798 Use-after-free in pngimagefree of libpng library. CVE-2019-7317 Cross-origin theft of images with...