updating for patch release

com.unity.perception/CHANGELOG.md

 
 ### Fixed
 
-## [0.8.0-preview.1] - 2021-03-15
+## [0.8.0-preview.2] - 2021-03-15
 
 ### Upgrade Notes
 

com.unity.perception/package.json

   "displayName": "Perception",
   "name": "com.unity.perception",
   "unity": "2019.4",
-  "version": "0.8.0-preview.1",
+  "version": "0.8.0-preview.2",
   "samples": [
     {
       "displayName": "Tutorial Files",