Bump webpack from 5.75.0 to 5.76.3 in /docs (#797)

Bumps [webpack](https://github.com/webpack/webpack) from 5.75.0 to 5.76.3.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v5.75.0...v5.76.3)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: indirect
...

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Co-authored-by: Shawn <44221603+smarshall-spitzbart@users.noreply.github.com>