Bumps [electron-updater](https://github.com/electron-userland/electron-builder) from 4.3.8 to 4.3.9.
- [Release notes](https://github.com/electron-userland/electron-builder/releases)
- [Changelog](https://github.com/electron-userland/electron-builder/blob/master/CHANGELOG.md)
- [Commits](https://github.com/electron-userland/electron-builder/commits

)

---
updated-dependencies:
- dependency-name: electron-updater
  dependency-type: direct:production
  update-type: version-update:semver-patch
...
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