Bump ansi-html and webpack-dev-server in /forseti-visualizer-ui (#124)
Bump ansi-html and webpack-dev-server in /forseti-visualizer-ui (#124)

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


Removes `ansi-html`

Updates `webpack-dev-server` from 3.11.0 to 3.11.3
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/v3.11.3/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-server/compare/v3.11.0...v3.11.3)

---
updated-dependencies:
- dependency-name: ansi-html
  dependency-type: indirect
- dependency-name: webpack-dev-server
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
forseti-security/forseti-visualizer,forseti-security/forseti-visualizer,forseti-security/forseti-visualizer