gdk4-win32: Downgrade win32 crate

As it is an api break requiring changes to the win32 gir file
and a bunch of work that can be done later

Author: bilelmoussaoui

Cargo.lock

@@ -29,7 +29,7 @@ gio.workspace = true
 glib.workspace = true
 libc.workspace = true
 khronos-egl = {version = "6.0", optional = true}
-windows = { version = "0.58", features = [
+windows = { version = "0.56", features = [
     "Win32_Foundation",
     "Win32_UI_WindowsAndMessaging",
 ], optional = true }