Bump babylonjs from 5.57.1 to 6.9.0

Bumps [babylonjs](https://github.com/BabylonJS/Babylon.js) from 5.57.1 to 6.9.0.
- [Release notes](https://github.com/BabylonJS/Babylon.js/releases)
- [Changelog](https://github.com/BabylonJS/Babylon.js/blob/master/CHANGELOG.md)
- [Commits](BabylonJS/Babylon.js@5.57.1...6.9.0)

---
updated-dependencies:
- dependency-name: babylonjs
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -462,7 +462,7 @@
         "@vscode/extension-telemetry": "^0.6.2",
         "@vscode/webview-ui-toolkit": "^1.2.2",
         "assert": "^2.0.0",
-        "babylonjs": "^5.54.0",
+        "babylonjs": "^6.9.0",
         "babylonjs-materials": "^5.54.0",
         "buffer": "^6.0.3",
         "console-browserify": "^1.2.0",