Updated changelog for T_ENUM_CASE (ref #3483)

Author: gsherwood

package.xml

@@ -31,6 +31,7 @@ http://pear.php.net/dtd/package-2.0.xsd">
     -- Thanks to Mark Baker for the patch
   - Added support for PHP 8.1 enums
     -- This new syntax has been backfilled for PHP versions less than 8.1
+    -- Includes a new T_ENUM_CASE token to represent the case statements inside an enum
     -- Thanks to Jaroslav Hanslík for the patch
   - Added support for the PHP 8.1 readonly token
     -- Tokenzing of the readonly keyword has been backfilled for PHP versions less than 8.1