Bump the CSS cache. (#68)

Author: ntoll

Diff for: index.html

@@ -20,7 +20,7 @@
         <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
         <link href="https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap" rel="stylesheet">
 
-		<link rel="stylesheet" href="assets/css/main.css?v=1.4">
+		<link rel="stylesheet" href="assets/css/main.css?v=1.5">
 
         <!-- Global site tag (gtag.js) - Google Analytics -->
         <script async src="https://www.googletagmanager.com/gtag/js?id=G-LKETQQ110J"></script>