refactor: duration field in quiz should be in minutes

lms/patches/v2_0/convert_quiz_duration_to_minutes.py

@@ -0,0 +1,10 @@
+import frappe
+from frappe.utils import ceil, flt
+
+
+def execute():
+	quizzes = frappe.get_all(
+		"LMS Quiz", fields=["name", "duration"], filters={"duration": [">", 0]}
+	)
+	for quiz in quizzes:
+		frappe.db.set_value("LMS Quiz", quiz.name, "duration", ceil(flt(quiz.duration) / 60))