Bump ansi-html and gatsby

Removes [ansi-html](https://github.com/Tjatse/ansi-html). It's no longer used after updating ancestor dependency [gatsby](https://github.com/gatsbyjs/gatsby). These dependencies need to be updated together.


Removes `ansi-html`

Updates `gatsby` from 4.8.1 to 4.25.5
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/compare/gatsby@4.8.1...gatsby@4.25.5)

---
updated-dependencies:
- dependency-name: ansi-html
  dependency-type: indirect
- dependency-name: gatsby
  dependency-type: direct:development
...

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