Listed updated attribute sniffs in changelog

package.xml

@@ -38,6 +38,13 @@ http://pear.php.net/dtd/package-2.0.xsd">
     -- A new T_ATTRIBUTE_END token is available to mark the end of an attribute
     -- New attribute_owner and attribute_closer indexes are available in the tokens array for all tokens inside an attribute
     -- Tokenizing of attributes has been backfilled for older PHP versions
+    -- The following sniffs have been updated to support attributes:
+       --- PEAR.Commenting.ClassComment
+       --- PEAR.Commenting.FileComment
+       --- PSR1.Files.SideEffects
+       --- PSR12.Files.FileHeader
+       --- Squiz.Commenting.ClassComment
+       --- Squiz.Commenting.FileComment
     -- Thanks to Alessandro Chitolina for the patch
   - Added support for PHP 8.0 dereferencing of text strings with interpolated variables
     -- Thanks to Juliette Reinders Folmer for the patch