build(deps): bump sc-network from 0.28.0 to 0.31.0

Bumps [sc-network](https://github.com/paritytech/polkadot-sdk) from 0.28.0 to 0.31.0.
- [Release notes](https://github.com/paritytech/polkadot-sdk/releases)
- [Changelog](https://github.com/paritytech/polkadot-sdk/blob/master/docs/RELEASE.md)
- [Commits](https://github.com/paritytech/polkadot-sdk/commits)

---
updated-dependencies:
- dependency-name: sc-network
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>