chore(deps): update semver requirement from ^5.5.0 to ^6.0.0 (#3919)
chore(deps): update semver requirement from ^5.5.0 to ^6.0.0 (#3919)

Updates the requirements on [semver](https://github.com/npm/node-semver) to permit the latest version.
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/master/CHANGELOG.md)
- [Commits](https://github.com/npm/node-semver/compare/v5.5.0...v6.0.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
driftyco/ionic-cli,driftyco/ionic-cli,driftyco/ionic-cli