Dependabot: Bump npm from 6.14.8 to 7.6.2 (#222)

Bumps [npm](https://github.com/npm/cli) from 6.14.8 to 7.6.2.
- [Release notes](https://github.com/npm/cli/releases)
- [Changelog](https://github.com/npm/cli/blob/latest/CHANGELOG.md)
- [Commits](npm/cli@v6.14.8...v7.6.2)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jessica White <me@jesswhite.co.uk>