Update CHANGES.md
Update CHANGES.md
kmadel/dockerhub-notification-plugin,holidaycheck/dockerhub-notification-plugin,jenkinsci/dockerhub-notification-plugin,holidaycheck/dockerhub-notification-plugin,jenkinsci/dockerhub-notification-plugin,ndeloof/dockerhub-notification-plugin,lguminski/dockerhub-notification-plugin,ndeloof/dockerhub-notification-plugin,kmadel/dockerhub-notification-plugin,lguminski/dockerhub-notification-plugin,jenkinsci/dockerhub-notification-plugin