chore(deps-dev): bump spectron from 9.0.0 to 19.0.0

Bumps [spectron](https://github.com/electron/spectron) from 9.0.0 to 19.0.0.
- [Release notes](https://github.com/electron/spectron/releases)
- [Changelog](https://github.com/electron-userland/spectron/blob/master/CHANGELOG.md)
- [Commits](electron-userland/spectron@v9.0.0...v19.0.0)

---
updated-dependencies:
- dependency-name: spectron
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]