chore(deps-dev): bump electron-packager from 15.1.0 to 15.2.0 (#18)

Bumps [electron-packager](https://github.com/electron/electron-packager) from 15.1.0 to 15.2.0.
- [Release notes](https://github.com/electron/electron-packager/releases)
- [Changelog](https://github.com/electron/electron-packager/blob/master/NEWS.md)
- [Commits](electron/packager@v15.1.0...v15.2.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>