Bump plotly.js from 2.20.0 to 2.25.2

Bumps [plotly.js](https://github.com/plotly/plotly.js) from 2.20.0 to 2.25.2.
- [Release notes](https://github.com/plotly/plotly.js/releases)
- [Changelog](https://github.com/plotly/plotly.js/blob/master/CHANGELOG.md)
- [Commits](plotly/plotly.js@v2.20.0...v2.25.2)

---
updated-dependencies:
- dependency-name: plotly.js
  dependency-type: direct:production
...

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