[nancy][grue] Update BIOS with DSU

data/grid5000/sites/nancy/clusters/grue/nodes/grue-1.json

@@ -7,9 +7,9 @@
     "platform_type": "x86_64"
   },
   "bios": {
-    "release_date": "08/15/2019",
+    "release_date": "09/26/2019",
     "vendor": "Dell Inc.",
-    "version": "1.10.6"
+    "version": "1.11.4"
   },
   "bmc_version": "4.00.00.00",
   "chassis": {