Bump lerna from 3.4.0 to 3.4.3
Bump lerna from 3.4.0 to 3.4.3

Bumps [lerna](https://github.com/lerna/lerna) from 3.4.0 to 3.4.3.
- [Release notes](https://github.com/lerna/lerna/releases)
- [Changelog](https://github.com/lerna/lerna/blob/master/CHANGELOG.md)
- [Commits](https://github.com/lerna/lerna/compare/v3.4.0...v3.4.3)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
webmiddle/webmiddle