GitLab

Bumps [github.com/libp2p/go-libp2p](https://github.com/libp2p/go-libp2p) from 0.4.2 to 0.5.0.
- [Release notes](https://github.com/libp2p/go-libp2p/releases)
- [Changelog](https://github.com/libp2p/go-libp2p/blob/master/NEWS.md)
- [Commits](https://github.com/libp2p/go-libp2p/compare/v0.4.2...v0.5.0)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>