update changelog with release PR

Author: marcelmamula

CHANGELOG.rst

@@ -17,6 +17,7 @@ Minor Changes
 - software_center_download: Add option to search for latest packages (https://github.com/sap-linuxlab/community.sap_launchpad/pull/28)
 - maintenance_planner modules: Add option to use Display ID instead of name (https://github.com/sap-linuxlab/community.sap_launchpad/pull/31)
 - sap_software_download: New role for downloading software (https://github.com/sap-linuxlab/community.sap_launchpad/pull/32)
+- Collection Readme update and preparation for 1.2.0 release (https://github.com/sap-linuxlab/community.sap_launchpad/pull/34)
 
 Bugfixes
 --------