Bump webpack from 5.4.0 to 5.76.0 in /test/webpack-versions/5.4.0 (#589)

* Bump webpack from 5.4.0 to 5.76.0 in /test/webpack-versions/5.4.0

Bumps [webpack](https://github.com/webpack/webpack) from 5.4.0 to 5.76.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v5.4.0...v5.76.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update webpack v5 test directory to v5.76.0

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Vesa Laakso <482561+valscion@users.noreply.github.com>