Updated ChangeLog.

Changelog.md

 # Changelog
 
 All notable changes to this project will be documented in this file.
-## [1.7] - 2024-04-03
+## [1.9] - 2024-04-22
+- GAP Ansible collection version is pinned to 1.0.68
+## [1.8] - 2024-04-03
 - GAP Ansible collection version is pinned to 1.0.59
 ## [1.7] - 2024-03-28
 - GAP Ansible collection version is pinned to 1.0.58