chore(deps): bump the cargo group across 2 directories with 1 update

Bumps the cargo group with 1 update in the /packages/preconfirmation-p2p directory: [libp2p-gossipsub](https://github.com/libp2p/rust-libp2p).
Bumps the cargo group with 1 update in the /packages/taiko-client-rs directory: [libp2p-gossipsub](https://github.com/libp2p/rust-libp2p).


Updates `libp2p-gossipsub` from 0.49.2 to 0.49.4
- [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/commits)

Updates `libp2p-gossipsub` from 0.49.2 to 0.49.4
- [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/commits)

---
updated-dependencies:
- dependency-name: libp2p-gossipsub
  dependency-version: 0.49.4
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: libp2p-gossipsub
  dependency-version: 0.49.4
  dependency-type: indirect
  dependency-group: cargo
...

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Author: dependabot[bot]