Bump version to 3.5.3

Author: kroatoa

com.unity.postprocessing/CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this package will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [3.5.3] - 2026-02-19
+
+### Fixed
+- Explicitly declare dependency on UI module that was implicit before. 
+
 ## [3.5.2] - 2025-12-17
 
 ### Fixed

com.unity.postprocessing/package.json

@@ -1,6 +1,6 @@
 {
     "name": "com.unity.postprocessing",
-    "version": "3.5.2",
+    "version": "3.5.3",
     "displayName": "Post Processing",
     "unity": "2019.4",
     "unityRelease": "19f1",