Merge pull request #314 from Unity-Technologies/add-changelog-note

Updated Changelog Note

com.unity.perception/CHANGELOG.md

 
 ### Changed
 
+Increased color variety in instance segmentation images
+
+The PoissonDiskSampling utility now samples a larger region of points to then crop to size of the intended region to prevent edge case bias.
+
+Upgraded capture package dependency to 0.0.10-preview.22 to fix an issue with URP where post processing effects were not included when capturing images.
+
 ### Deprecated
 
 ### Removed