build(deps): bump npm from 6.4.1 to 6.11.2
build(deps): bump npm from 6.4.1 to 6.11.2

Bumps [npm](https://github.com/npm/cli) from 6.4.1 to 6.11.2.
- [Release notes](https://github.com/npm/cli/releases)
- [Changelog](https://github.com/npm/cli/blob/latest/CHANGELOG.md)
- [Commits](https://github.com/npm/cli/compare/v6.4.1...v6.11.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
tessel/t2-cli,tessel/t2-cli,tessel/t2-cli