Update default for TZ

pi-hosted_template/template/portainer-v2.json

@@ -2322,7 +2322,7 @@
 					"name": "PGID"
 				},
 				{
-					"default": "Europe/London",
+					"default": "America/New_York",
 					"label": "TZ",
 					"name": "TZ"
 				}