[example] Update builtins to v1.66.2

Use the newly published extension pack for the latest vscode extensions API
we support, v1.66.2. Add vscode.ipynb to exclusion list since it does not
work well yet.

Signed-off-by: Marc Dumais <marc.dumais@ericsson.com>

package.json

@@ -99,7 +99,7 @@
   "theiaPluginsDir": "plugins",
   "theiaPlugins": {
     "vscode.markdown-language-features": "https://open-vsx.org/api/vscode/markdown-language-features/1.64.2/file/vscode.markdown-language-features-1.64.2.vsix",
-    "eclipse-theia.builtin-extension-pack": "https://open-vsx.org/api/eclipse-theia/builtin-extension-pack/1.64.2/file/eclipse-theia.builtin-extension-pack-1.64.2.vsix",
+    "eclipse-theia.builtin-extension-pack": "https://open-vsx.org/api/eclipse-theia/builtin-extension-pack/1.66.2/file/eclipse-theia.builtin-extension-pack-1.66.2.vsix",
     "EditorConfig.EditorConfig": "https://open-vsx.org/api/EditorConfig/EditorConfig/0.14.4/file/EditorConfig.EditorConfig-0.14.4.vsix",
     "dbaeumer.vscode-eslint": "https://open-vsx.org/api/dbaeumer/vscode-eslint/2.1.20/file/dbaeumer.vscode-eslint-2.1.20.vsix",
     "ms-vscode.references-view": "https://open-vsx.org/api/ms-vscode/references-view/0.0.89/file/ms-vscode.references-view-0.0.89.vsix"
@@ -111,6 +111,7 @@
     "vscode.git-base",
     "vscode.github",
     "vscode.github-authentication",
+    "vscode.ipynb",
     "vscode.microsoft-authentication"
   ]
 }