Bump serialize-javascript from 7.0.3 to 7.0.5 in /sample/webpack5 (#2089)

Bumps [serialize-javascript](https://github.com/yahoo/serialize-javascript) from 7.0.3 to 7.0.5.
- [Release notes](https://github.com/yahoo/serialize-javascript/releases)
- [Commits](https://github.com/yahoo/serialize-javascript/compare/v7.0.3...v7.0.5)

---
updated-dependencies:
- dependency-name: serialize-javascript
  dependency-version: 7.0.5
  dependency-type: indirect
...

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