Update libp2p requirement from 0.38 to 0.39
Update libp2p requirement from 0.38 to 0.39

Updates the requirements on [libp2p](https://github.com/libp2p/rust-libp2p) to permit the latest version.
- [Release notes](https://github.com/libp2p/rust-libp2p/releases)
- [Changelog](https://github.com/libp2p/rust-libp2p/blob/master/CHANGELOG.md)
- [Commits](https://github.com/libp2p/rust-libp2p/compare/v0.38.0...v0.39.1)

---
updated-dependencies:
- dependency-name: libp2p
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
iduartgomez/simag,iduartgomez/simag