chore(deps-dev): bump postcss in /frontend/amundsen_application/static (

#2200)

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.39 to 8.4.31.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@7.0.39...8.4.31)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

frontend/amundsen_application/static/package.json

@@ -84,7 +84,7 @@
     "mini-css-extract-plugin": "^1.3.6",
     "moment-locales-webpack-plugin": "^1.2.0",
     "node-sass": "^5.0.0",
-    "postcss": "^7.0.32",
+    "postcss": "^8.4.31",
     "prettier": "^2.2.1",
     "react-docgen-typescript-loader": "^3.7.2",
     "redux-mock-store": "^1.5.4",