linux-dmabuf-v1: bump to v5

We already send a protocol error when the modifiers aren't the same
for all planes.

References: https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/224

types/wlr_linux_dmabuf_v1.c

@@ -22,7 +22,7 @@
 #include <wlr/backend/drm.h>
 #endif
 
-#define LINUX_DMABUF_VERSION 4
+#define LINUX_DMABUF_VERSION 5
 
 struct wlr_linux_buffer_params_v1 {
 	struct wl_resource *resource;