fix(travis): update node schedule (#7506)

data/node-js-schedule.json

@@ -58,7 +58,7 @@
   "v12": {
     "start": "2019-04-23",
     "lts": "2019-10-21",
-    "maintenance": "2020-10-20",
+    "maintenance": "2020-11-30",
     "end": "2022-04-30",
     "codename": "Erbium"
   },
@@ -69,14 +69,21 @@
   },
   "v14": {
     "start": "2020-04-21",
-    "lts": "2020-10-20",
+    "lts": "2020-10-27",
     "maintenance": "2021-10-19",
     "end": "2023-04-30",
     "codename": ""
   },
   "v15": {
-    "start": "2020-10-21",
+    "start": "2020-10-20",
     "maintenance": "2021-04-01",
     "end": "2021-06-01"
+  },
+  "v16": {
+    "start": "2021-04-20",
+    "lts": "2021-10-26",
+    "maintenance": "2022-10-18",
+    "end": "2024-04-30",
+    "codename": ""
   }
 }