feat(dbus): Update service key for systemd-timesyncd to 'ntp'

Renamed the key 'systemd-timesyncd' to 'ntp' in the services mapping.
This improves naming consistency and aligns it with the expected service
identifier. No functional changes were introduced.

Signed-off-by: Sven Sager <s.sager@kunbus.com>

src/revpi_middleware/dbus_middleware1/system_config/interface_services.py

@@ -56,7 +56,7 @@ class InterfaceSoftwareServices(DbusInterface):
         self.services = {
             "pimodbus-master": ["pimodbus-master.service"],
             "pimodbus-slave": ["pimodbus-slave.service"],
-            "systemd-timesyncd": ["systemd-timesyncd.service"],
+            "ntp": ["systemd-timesyncd.service"],
             "ssh": ["ssh.service"],
             "nodered": ["nodered.service"],
             "noderedrevpinodes-server": ["noderedrevpinodes-server.service"],