temp/gtk4.0: upgrade to 4.13.6 (MR 4773)

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

temp/gtk4.0/APKBUILD

 # Maintainer: Teemu Ikonen <tpikonen@mailbox.org>
 # Forked from Alpine to apply patches for adaptive transient window handling
 pkgname=gtk4.0
-pkgver=9999.4.12.5
-_pkgver=4.12.5
-pkgrel=1
+pkgver=9999.4.13.6
+_pkgver=4.13.6
+pkgrel=0
 pkgdesc="The GTK Toolkit (v4)"
 url="https://www.gtk.org/"
 arch="all"
@@ -52,6 +52,7 @@ makedepends="
 	perl
 	py3-docutils
 	sassc
+	shaderc
 	tiff-dev
 	vulkan-loader-dev
 	zlib-dev
@@ -133,7 +134,7 @@ lang() {
 }
 
 sha512sums="
-813758f4fe23b99b2ea1cf22156b86b22df30024717ae3b30bbe36111f9b1363bbd4da5fe8e5f69268c43794ea165e12c1c5bc52fd64bcbb1f9ccd3121540ac4  gtk-4.12.5.tar.xz
+c913e288bab77cd3971c1ede05a0b28e06923981c3a9584e4121d3634a570605fe89c7a25f910db72b59cbd000f3ff61db587626218815e1364d6fd9426797d8  gtk-4.13.6.tar.xz
 85ced777c23111f502f8a7d49902c65b113f51c1156490c08de2d8f9cb4a5e85c4a3eec0f043c0fa9d9ff44d6b9ab44c4c2865ecd06c3979a3f2558b287c35fd  0001-window-Maximize-resizable-transient-windows-on-small.patch
 559f362a918f0f60dfd621daa489f16a61ea9ddd9ad0ef7ad043ceebe1013b8f2fce2f5c3c27597bfc801f2703867095909f16e2b9088e0bf374f36667e25abe  0002-windowcontrols-Force-close-buttons-for-transient-win.patch
 "