Update SDL_events.inc to match SDL 3.2.20

Author: suve

tests/type-sizes.sh

@@ -163,6 +163,7 @@ for TYPENAME in \
 	SDL_QuitEvent \
 	SDL_Rect \
 	SDL_RendererLogicalPresentation \
+	SDL_RenderEvent \
 	SDL_ScaleMode \
 	SDL_Scancode \
 	SDL_SensorEvent \

units/SDL3.pas

@@ -109,7 +109,7 @@ interface
 {$I SDL_pen.inc}                          // 3.1.6-prev
 {$I SDL_touch.inc}                        // 3.1.6-prev
 {$I SDL_camera.inc}                       // 3.1.6-prev
-{$I SDL_events.inc}                       // 3.1.6-prev
+{$I SDL_events.inc}                       // 3.2.20
 {$I SDL_init.inc}                         // 3.2.20
 {$I SDL_render.inc}                       // 3.1.6-prev
 {$I SDL_gpu.inc}                          // 3.2.0