Security update for webkit2gtk3

Open Source Vulnerabilities SUSE-SU-2020:3867-1

This update for webkit2gtk3 fixes the following issues: -webkit2gtk3 was updated to version 2.30.3 (bsc#1179122 bsc#1179451): - CVE-2021-13543: Fixed a use after free which could have led to arbitrary code execution. - CVE-2021-13584: Fixed a use after free which could have led to arbitrary code execution. - CVE-2021-9948: Fixed a type confusion which could have led to arbitrary code execution. - CVE-2021-9951: Fixed a use after free which could have led to arbitrary code execution. - CVE-2021-9983: Fixed an out of bounds write which could have led to arbitrary code execution. - Have the libwebkit2gtk package require libjavascriptcoregtk of the same version (bsc#1171531). - Enable c_loop on aarch64: currently needed for compilation to succeed with JIT disabled. Also disable sampling profiler, since it conflicts with c_loop (bsc#1177087).