feat(monitor): Bump version to 1.2.3 and refactor notification logic

Updated monitor/monitor.sh to version 1.2.3.
Removed the redundant else block in the send_notification_if_changed() function in monitor/monitor.sh as it provided no functional change.
Updated the "Monitor Suite" version in packages.conf to 1.2.3 to reflect the script update.

monitor/monitor.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-# Version: 1.2.2
+# Version: 1.2.3
 # =============================================================================
 # SAP HANA Monitoring Script
 #
@@ -82,8 +82,6 @@ send_notification_if_changed() {
         curl -H "Authorization: Bearer ${NTFY_TOKEN}" -H "Title: ${full_title}" -d "${final_message}" "${NTFY_TOPIC_URL}" > /dev/null 2>&1
         set_state "${alert_key}" "$current_value"
         echo "🔔 Notification sent for ${alert_key}: ${full_message}"
-    else
-        # State unchanged, no notification needed.
     fi
 }