docs(announcements): addressed comments

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: igpetrov

enterprise/content/announcement.md

@@ -69,8 +69,6 @@ __Changes in Supported Environments:__
 * End of Support Spring 6
 * End of Support Spring Boot 3.5
 * End of Support MariaDB 10.6
-* End of Support Spring Boot 3.5
-* End of Support Spring 6
 
 ### Environment Update Release – April 2026