Bump webpack and @types/webpack in /Website

Bumps [webpack](https://github.com/webpack/webpack) and [@types/webpack](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/webpack). These dependencies needed to be updated together.

Updates `webpack` from 5.73.0 to 5.89.0
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v5.73.0...v5.89.0)

Updates `@types/webpack` from 5.28.0 to 5.28.5
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/webpack)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
  update-type: version-update:semver-minor
- dependency-name: "@types/webpack"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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