Update changelog

CHANGELOG.md

@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+### [3.2.3] 2020-11-12
+
+  * Fixed: constraints in the form of `X || Y, >=Y.1` and other such complex constructs were in some cases being optimized into a more restrictive constraint
+
 ### [3.2.2] 2020-10-14
 
   * Fixed: internal code cleanups
@@ -128,6 +132,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
     - Namespace: `Composer\Test\Package\LinkConstraint` -> `Composer\Test\Semver\Constraint`
   * Changed: code style using php-cs-fixer.
 
+[3.2.3]: https://github.com/composer/semver/compare/3.2.2...3.2.3
 [3.2.2]: https://github.com/composer/semver/compare/3.2.1...3.2.2
 [3.2.1]: https://github.com/composer/semver/compare/3.2.0...3.2.1
 [3.2.0]: https://github.com/composer/semver/compare/3.1.0...3.2.0