package/webkitgtk: bump to version 2.30.3

This is a minor release which solved a build issues and fixes a number
of rendering issues. Release notes:

  https://webkitgtk.org/2020/11/20/webkitgtk2.30.3-released.html

Signed-off-by: Adrian Perez de Castro <aperez@igalia.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2 files changed