Changelog: add entry about tiled HEIF support with the CLI

Signed-off-by: James Almer <jamrial@gmail.com>

Changelog

@@ -9,6 +9,7 @@ version <next>:
 - MPEG-H 3D Audio decoding via mpeghdec
 - D3D12 H.264 encoder
 - drawvg filter via libcairo
+- ffmpeg CLI tiled HEIF support
 
 
 version 8.0: