MAINTAINERS: Update the GPU Scheduler email

Update the GPU Scheduler maintainer email.

Cc: Alex Deucher <Alexander.Deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Cc: AMD Graphics <amd-gfx@lists.freedesktop.org>
Cc: Direct Rendering Infrastructure - Development <dri-devel@lists.freedesktop.org>
Signed-off-by: Luben Tuikov <ltuikov89@gmail.com>
Acked-by: Alex Deucher <Alexander.Deucher@amd.com>
Link: https://lore.kernel.org/r/20231026174438.18427-2-ltuikov89@gmail.com

Author: Luben Tuikov

MAINTAINERS

@@ -7153,7 +7153,7 @@ F:	Documentation/devicetree/bindings/display/xlnx/
 F:	drivers/gpu/drm/xlnx/
 
 DRM GPU SCHEDULER
-M:	Luben Tuikov <luben.tuikov@amd.com>
+M:	Luben Tuikov <ltuikov89@gmail.com>
 L:	dri-devel@lists.freedesktop.org
 S:	Maintained
 T:	git git://anongit.freedesktop.org/drm/drm-misc