chore(deps): bump ansi-html and webpack-hot-middleware

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


Removes `ansi-html`

Updates `webpack-hot-middleware` from 2.25.0 to 2.25.2
- [Release notes](https://github.com/webpack-contrib/webpack-hot-middleware/releases)
- [Commits](webpack-contrib/webpack-hot-middleware@v2.25.0...v2.25.2)

---
updated-dependencies:
- dependency-name: ansi-html
  dependency-type: indirect
- dependency-name: webpack-hot-middleware
  dependency-type: direct:development
...

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

package.json

@@ -78,7 +78,7 @@
     "webpack-bundle-analyzer": "3.6.0",
     "webpack-cli": "3.3.10",
     "webpack-dev-middleware": "3.7.2",
-    "webpack-hot-middleware": "2.25.0",
+    "webpack-hot-middleware": "2.25.2",
     "webpack-merge": "4.2.2",
     "postcss-clean": "1.1.0",
     "autoprefixer": "9.7.3",