chore(template-explorer): bump monaco version for live deployed page

packages/template-explorer/index.html

@@ -1,5 +1,5 @@
 <title>Vue Template Explorer</title>
-<link rel="stylesheet" data-name="vs/editor/editor.main" href="https://unpkg.com/monaco-editor@0.18.1/min/vs/editor/editor.main.css">
+<link rel="stylesheet" data-name="vs/editor/editor.main" href="https://unpkg.com/monaco-editor@0.20.0/min/vs/editor/editor.main.css">
 <link rel="stylesheet" href="./style.css">
 
 <div id="header"></div>
@@ -8,7 +8,7 @@
 
 <script src="https://unpkg.com/estree-walker@0.8.1/dist/estree-walker.umd.js"></script>
 <script src="https://unpkg.com/source-map@0.6.1/dist/source-map.js"></script>
-<script src="https://unpkg.com/monaco-editor@0.18.1/min/vs/loader.js"></script>
+<script src="https://unpkg.com/monaco-editor@0.20.0/min/vs/loader.js"></script>
 <script>
 window._deps = {
   'estree-walker': estreeWalker,
@@ -17,7 +17,7 @@ window._deps = {
 
 require.config({
   paths: {
-    'vs': 'https://unpkg.com/monaco-editor/min/vs'
+    'vs': 'https://unpkg.com/monaco-editor@0.20.0/min/vs'
   }
 })
 </script>