Bump maplibre-gl and plotly.js

Bumps [maplibre-gl](https://github.com/maplibre/maplibre-gl-js) to 6.9.0 and updates ancestor dependency [plotly.js](https://github.com/plotly/plotly.js). These dependencies need to be updated together.


Updates `maplibre-gl` from 4.7.1 to 6.9.0
- [Release notes](https://github.com/maplibre/maplibre-gl-js/releases)
- [Changelog](https://github.com/maplibre/maplibre-gl-js/blob/main/CHANGELOG.md)
- [Commits](maplibre/maplibre-gl-js@v4.7.1...v6.9.0)

Updates `plotly.js` from 3.6.0 to 4.1.1
- [Release notes](https://github.com/plotly/plotly.js/releases)
- [Changelog](https://github.com/plotly/plotly.js/blob/main/CHANGELOG.md)
- [Commits](plotly/plotly.js@v3.6.0...v4.1.1)

---
updated-dependencies:
- dependency-name: maplibre-gl
  dependency-version: 6.9.0
  dependency-type: indirect
- dependency-name: plotly.js
  dependency-version: 4.1.1
  dependency-type: direct:development
...

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

Author: dependabot[bot]