build(deps): Bump loader-utils from 2.0.2 to 2.0.3 in /docs (#13800)

Bumps [loader-utils](https://github.com/webpack/loader-utils) from 2.0.2 to 2.0.3.
- [Release notes](https://github.com/webpack/loader-utils/releases)
- [Changelog](https://github.com/webpack/loader-utils/blob/v2.0.3/CHANGELOG.md)
- [Commits](webpack/loader-utils@v2.0.2...v2.0.3)

---
updated-dependencies:
- dependency-name: loader-utils
  dependency-type: indirect
...

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

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