Bump monaco-editor-core from 0.46.0 to 0.50.0 in /Website

Bumps [monaco-editor-core](https://github.com/microsoft/vscode) from 0.46.0 to 0.50.0.
- [Release notes](https://github.com/microsoft/vscode/releases)
- [Commits](https://github.com/microsoft/vscode/commits)

---
updated-dependencies:
- dependency-name: monaco-editor-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Website/package.json

@@ -94,7 +94,7 @@
     "material-ui-confirm": "^3.0.11",
     "modfs": "^1.0.0",
     "monaco-editor": "^0.48.0",
-    "monaco-editor-core": "^0.46.0",
+    "monaco-editor-core": "^0.50.0",
     "monaco-languageclient": "^6.5.0",
     "object-assign": "^4.1.1",
     "onsenui": "^2.12.8",