Updated webkit2 packages fix security vulnerabilities

The webkit2 package has been updated to version 2.30.3, fixing several security issues and other bugs. A type confusion issue may lead to arbitrary code execution with a maliciously crafted web content, fixed with improved memory handling (CVE-2020-9948). An use after free issue may lead to arbitrary code execution with a maliciously crafted web content, fixed with improved memory management (CVE-2020-9951). An out-of-bounds write issue may lead to code execution with a maliciously crafted web content, fixed with improved bounds checking (CVE-2020-9983). An use after free issue may lead to arbitrary code execution with a maliciously crafted web content, fixed with improved memory management (CVE-2020-13543). An use after free issue may lead to arbitrary code execution with a maliciously crafted web content, fixed with improved memory management. (CVE-2020-13584).