fix: get timezone in user_info

cypress/integration/datetime.js

@@ -103,6 +103,7 @@ context('Control Date, Time and DateTime', () => {
 				input_value: '12-02-2019 11:00' // admin timezone (Asia/Kolkata)
 			}
 		];
+
 		datetime_formats.forEach(d => {
 			it(`test datetime format ${d.date_format} ${d.time_format}`, () => {
 				cy.set_value('System Settings', 'System Settings', {

frappe/utils/__init__.py

@@ -901,10 +901,11 @@ def dictify(arg):
 def add_user_info(user, user_info):
 	if user not in user_info:
 		info = frappe.db.get_value("User",
-			user, ["full_name", "user_image", "name", 'email'], as_dict=True) or frappe._dict()
+			user, ["full_name", "user_image", "name", 'email', 'time_zone'], as_dict=True) or frappe._dict()
 		user_info[user] = frappe._dict(
 			fullname = info.full_name or user,
 			image = info.user_image,
 			name = user,
-			email = info.email
+			email = info.email,
+			time_zone = info.time_zone
 		)