Update uikit (#675)

Author: jarrodmillman

layouts/partials/head.html

@@ -1,3 +1,3 @@
 <!-- UIkit -->
-<script src="https://cdn.jsdelivr.net/npm/uikit@3.7.6/dist/js/uikit.min.js"></script>
-<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/uikit@3.7.6/dist/css/uikit.min.css" />
+<script src="https://cdn.jsdelivr.net/npm/uikit@3.16.24/dist/js/uikit.min.js"></script>
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/uikit@3.16.24/dist/css/uikit.min.css" />