Update index.html

update CDN for leaflet

index.html

@@ -7,8 +7,8 @@
 		<link rel="stylesheet" href="style.css" />
 		<link href='https://fonts.googleapis.com/css?family=Old+Standard+TT:400,400italic' rel='stylesheet' type='text/css'>
 		<script src="https://code.jquery.com/jquery-latest.min.js " ></script>
-		<link rel="stylesheet" href="https://cdn.leafletjs.com/leaflet-0.7.3/leaflet.css" />
-		<script src="https://cdn.leafletjs.com/leaflet-0.7.3/leaflet.js"></script>
+		<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin="" />
+		<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=" crossorigin=""></script>
 		<script src="js/leaflet.ajax.min.js"></script>
 		<script src="js/main.js"></script>
 		<link rel="shortcut icon" href="/favicon.png" />