Bump electron-builder from 20.38.5 to 20.39.0

Bumps [electron-builder](https://github.com/electron-userland/electron-builder) from 20.38.5 to 20.39.0.
- [Release notes](https://github.com/electron-userland/electron-builder/releases)
- [Changelog](https://github.com/electron-userland/electron-builder/blob/master/CHANGELOG.md)
- [Commits](electron-userland/electron-builder@v20.38.5...v20.39.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support