Update load-grunt-config requirement from ^2.0.0 to ^3.0.0
Update load-grunt-config requirement from ^2.0.0 to ^3.0.0

Updates the requirements on [load-grunt-config](https://github.com/firstandthird/load-grunt-config) to permit the latest version.
- [Release notes](https://github.com/firstandthird/load-grunt-config/releases)
- [Changelog](https://github.com/firstandthird/load-grunt-config/blob/master/CHANGELOG.md)
- [Commits](https://github.com/firstandthird/load-grunt-config/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
GetOlympus/Hera,GetOlympus/Hera,GetOlympus/Hera