Security update for chromium

This update for chromium fixes the following issues:

Chromium was updated to 78.0.3904.87 boo#1155643:

* CVE-2019-13721: Use-after-free in PDFium
* CVE-2019-13720: Use-after-free in audio

This update was imported from the openSUSE:Leap:15.0:Update update project.

Fixed bugs
bnc#1155643
VUL-0: chromium: multiple security issues fixed in 78.0.3904.87
Selected Binaries
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