Update CHANGELOG

Signed-off-by: Weilin Xu <[email protected]>

Author: mzweilin

CHANGELOG.md

@@ -15,6 +15,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Changed
 
+- Add duration of experiments in seconds in the benchmark CSV result by [mzweilin](https://github.com/mzweilin) in https://github.com/openvinotoolkit/anomalib/pull/2392
+
 ### Deprecated
 
 ### Fixed