Update CHANGELOG-1.1.md

Author: Akshay Kumar

CHANGELOG-1.1.md

@@ -3,6 +3,9 @@ CHANGELOG for 1.1.x
 
 This changelog references any relevant changes introduced in 1.1 minor versions.
 
+* 1.1.1 (2022-09-13)
+    * Bug Fixes: Entity reference updates and other miscellaneous bug fixes
+
 * 1.1.0 (2022-03-23)
     * Feature: Improved compatibility with PHP 8 and Symfony 5 components
     * Bug #92: Check if replyTo headers is provided while processing mail content (vipin-shrivastava)