installdeps: fix for a01deb28: use msys2 ccache

For msys2 dependencies in installdeps, make sure to only install msys2
layer ccache and NOT the mingw ccache, because the mingw ccache is
completely broken.

installdeps

@@ -749,7 +749,7 @@ windows_installdeps() {
     check pacman -Sy
 
     set --
-    for p in SDL2 ffmpeg openal sfml wxWidgets zlib binutils cmake ccache crt-git extra-cmake-modules gcc gcc-libs gdb headers-git make pkg-config tools-git windows-default-manifest libmangle-git nasm; do
+    for p in SDL2 ffmpeg openal sfml wxWidgets zlib binutils cmake crt-git extra-cmake-modules gcc gcc-libs gdb headers-git make pkg-config tools-git windows-default-manifest libmangle-git nasm; do
         set -- "$@" "${target}-${p}"
     done