This reverts commit 85ae7137ac6a1623be90c8f0897566367d300c12.
This reverts commit 4b2f3971981272b79da7f87b639ca8854a6ea89c. It updated gdk_pixbuf to 2.36.12 but unfortunately broke macOS builds. The new mime sniffing is not working correctly so that .png files cannot be built. Fixes #41314 /cc @jtojnar @lnl7
This reverts commit 50953c3cbcbe26498a5c9f13e3a49946803f7801.