message: test(WebpackExample): Bump viewer version
diff: <title>itk-wasm Webpack Example</title>
  <meta http-equiv="Content-type" content="text/html; charset=utf-8"/>
  <link rel="stylesheet" href="styles.css">
  - <script src="https://unpkg.com/itk-vtk-viewer@9.23.2/dist/itkVtkViewerCDN.js"></script>
  + <script src="https://cdn.jsdelivr.net/npm/itk-vtk-viewer@11.12.1/dist/itkVtkViewer.js"></script>
  </head>
  <body>
  