Update Renovate schedule (#148)

Why these changes are being introduced:
* Schedule Renovate to run between 12AM-4AM
on Mondays.

How this addresses that need:
* Adjust cron schedule
* Set timezone to America/New_York

Side effects of this change:
* None

Relevant ticket(s):
* None

Author: jonavellecuerdo

renovate.json

@@ -11,9 +11,10 @@
   "lockFileMaintenance": {
     "enabled": true,
     "schedule": [
-      "* 4 * * 1"
+      "* 0-4 * * 1"
     ]
   },
+  "timezone": "America/New_York",
   "vulnerabilityAlerts": {
     "labels": [
       "security"