build(deps-dev): bump nunjucks from 3.2.1 to 3.2.3

Bumps [nunjucks](https://github.com/mozilla/nunjucks) from 3.2.1 to 3.2.3.
- [Release notes](https://github.com/mozilla/nunjucks/releases)
- [Changelog](https://github.com/mozilla/nunjucks/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mozilla/nunjucks/commits)

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