Bump: bump @syntro-opensource/webpack-config from 1.3.2 to 1.4.0

Bumps [@syntro-opensource/webpack-config](https://github.com/syntro-opensource/webpack-config) from 1.3.2 to 1.4.0.
- [Release notes](https://github.com/syntro-opensource/webpack-config/releases)
- [Changelog](https://github.com/syntro-opensource/webpack-config/blob/master/CHANGELOG.md)
- [Commits](syntro-opensource/webpack-config@1.3.2...1.4.0)

---
updated-dependencies:
- dependency-name: "@syntro-opensource/webpack-config"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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