This update for webkit2gtk3 fixes the following issues:

Update to version 2.30.5 (bsc#1182286):

+ Bring back the WebKitPluginProcess installation that was removed by mistake.
+ Fix RunLoop objects leaked in worker threads.
+ Fix aarch64 llint build with JIT disabled.
+ Use Internet Explorer quirk for Google Docs.
+ Security fixes: CVE-2020-13558.

This update was imported from the SUSE:SLE-15-SP2:Update update project.