Bump underscore from 1.10.2 to 1.12.1
Bump underscore from 1.10.2 to 1.12.1

Bumps [underscore](https://github.com/jashkenas/underscore) from 1.10.2 to 1.12.1.
- [Release notes](https://github.com/jashkenas/underscore/releases)
- [Commits](https://github.com/jashkenas/underscore/compare/1.10.2...1.12.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
uber/grafana-dash-gen