temp/gtk4.0: upgrade to 4.12.5 (MR 4754)

Remove post-install etc. scripts.

[ci:skip-build]: Already built successfully in CI.

temp/gtk4.0/APKBUILD

@@ -1,12 +1,11 @@
 # Maintainer: Teemu Ikonen <tpikonen@mailbox.org>
 # Forked from Alpine to apply patches for adaptive transient window handling
 pkgname=gtk4.0
-pkgver=9999.4.12.4
-_pkgver=4.12.4
+pkgver=9999.4.12.5
+_pkgver=4.12.5
 pkgrel=0
 pkgdesc="The GTK Toolkit (v4)"
 url="https://www.gtk.org/"
-install="$pkgname.post-install $pkgname.post-upgrade $pkgname.post-deinstall"
 arch="all"
 options="!check" # Test suite is known to fail upstream
 license="LGPL-2.1-or-later"
@@ -133,7 +132,7 @@ lang() {
 }
 
 sha512sums="
-354c686c160c7996ec7c69b31204786245c2a92615e4799b6248776f10f4393c167e73caf8d2fb949539c978358ffa2151092a515be94ec7eeb8951b773ae6d0  gtk-4.12.4.tar.xz
+813758f4fe23b99b2ea1cf22156b86b22df30024717ae3b30bbe36111f9b1363bbd4da5fe8e5f69268c43794ea165e12c1c5bc52fd64bcbb1f9ccd3121540ac4  gtk-4.12.5.tar.xz
 85ced777c23111f502f8a7d49902c65b113f51c1156490c08de2d8f9cb4a5e85c4a3eec0f043c0fa9d9ff44d6b9ab44c4c2865ecd06c3979a3f2558b287c35fd  0001-window-Maximize-resizable-transient-windows-on-small.patch
 559f362a918f0f60dfd621daa489f16a61ea9ddd9ad0ef7ad043ceebe1013b8f2fce2f5c3c27597bfc801f2703867095909f16e2b9088e0bf374f36667e25abe  0002-windowcontrols-Force-close-buttons-for-transient-win.patch
 "

temp/gtk4.0/gtk4.0.post-deinstall

@@ -1,3 +0,0 @@
-#!/bin/sh
-
-rm -f etc/gtk-4.0/gdk-pixbuf.loaders

temp/gtk4.0/gtk4.0.post-install

@@ -1,4 +0,0 @@
-#!/bin/sh
-
-/usr/bin/gdk-pixbuf-query-loaders --update-cache
-

temp/gtk4.0/gtk4.0.post-upgrade

@@ -1 +0,0 @@
-gtk4.0.post-install