[sirius] Update enp266s MAC address, and chassis serial.

I forgot to change the integrated network interface MAC address and the chassis serial number.

Me dumb dumb.

data/grid5000/sites/lyon/clusters/sirius/nodes/sirius-1.json

@@ -15,7 +15,7 @@
   "chassis": {
     "manufacturer": "NVIDIA",
     "name": "DGXA100 920-23687-2530-000",
-    "serial": 1572221610085
+    "serial": 1574520610109
   },
   "exotic": true,
   "gpu_devices": {
@@ -280,7 +280,7 @@
       "firmware_version": "3.25, 0x800005cc",
       "interface": "Ethernet",
       "kavlan": false,
-      "mac": "5c:ff:35:e3:84:29",
+      "mac": "5c:ff:35:fb:bd:57",
       "management": false,
       "model": "I210 Gigabit Network Connection",
       "mountable": false,