Bump micromatch, laravel-mix, webpack and webpack-cli in /hugo

Bumps [micromatch](https://github.com/micromatch/micromatch) to 4.0.8 and updates ancestor dependencies [micromatch](https://github.com/micromatch/micromatch), [laravel-mix](https://github.com/JeffreyWay/laravel-mix), [webpack](https://github.com/webpack/webpack) and [webpack-cli](https://github.com/webpack/webpack-cli). These dependencies need to be updated together.


Updates `micromatch` from 3.1.10 to 4.0.8
- [Release notes](https://github.com/micromatch/micromatch/releases)
- [Changelog](https://github.com/micromatch/micromatch/blob/master/CHANGELOG.md)
- [Commits](micromatch/micromatch@3.1.10...4.0.8)

Updates `laravel-mix` from 4.1.4 to 6.0.49
- [Release notes](https://github.com/JeffreyWay/laravel-mix/releases)
- [Changelog](https://github.com/laravel-mix/laravel-mix/blob/master/CHANGELOG.md)
- [Upgrade guide](https://github.com/laravel-mix/laravel-mix/blob/master/UPGRADE.md)
- [Commits](https://github.com/JeffreyWay/laravel-mix/commits)

Updates `webpack` from 4.47.0 to 5.96.1
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.47.0...v5.96.1)

Updates `webpack-cli` from 3.3.12 to 5.1.4
- [Release notes](https://github.com/webpack/webpack-cli/releases)
- [Changelog](https://github.com/webpack/webpack-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-cli/compare/[email protected])

---
updated-dependencies:
- dependency-name: micromatch
  dependency-type: indirect
- dependency-name: laravel-mix
  dependency-type: direct:production
- dependency-name: webpack
  dependency-type: direct:production
- dependency-name: webpack-cli
  dependency-type: direct:production
...

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