package/webkitgtk: security bump to version 2.32.4

package/webkitgtk: security bump to version 2.32.4

This is a minor release which provides fixes for CVE-2021-30858 and
a number of other potential security issues without an associated CVE.
Patch "0001-Add-ldp-and-stp-support-for-FP-registers-plus-some-b.patch"
is deleted as it has been included in this release.

Full release notes can be found at:

  https://webkitgtk.org/2021/09/17/webkitgtk2.32.4-released.html

An accompanying security advisory has been published at:

  https://webkitgtk.org/security/WSA-2021-0005.html

Signed-off-by: Adrian Perez de Castro <aperez@igalia.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>