build(deps): bump the cargo group across 1 directory with 4 updates

Bumps the cargo group with 4 updates in the /op-service/rethdb-reader directory: [curve25519-dalek](https://github.com/dalek-cryptography/curve25519-dalek), [h2](https://github.com/hyperium/h2), [mio](https://github.com/tokio-rs/mio) and [shlex](https://github.com/comex/rust-shlex).


Updates `curve25519-dalek` from 4.1.1 to 4.1.3
- [Release notes](https://github.com/dalek-cryptography/curve25519-dalek/releases)
- [Commits](dalek-cryptography/curve25519-dalek@curve25519-4.1.1...curve25519-4.1.3)

Updates `h2` from 0.3.21 to 0.3.26
- [Release notes](https://github.com/hyperium/h2/releases)
- [Changelog](https://github.com/hyperium/h2/blob/v0.3.26/CHANGELOG.md)
- [Commits](hyperium/h2@v0.3.21...v0.3.26)

Updates `mio` from 0.8.9 to 0.8.11
- [Release notes](https://github.com/tokio-rs/mio/releases)
- [Changelog](https://github.com/tokio-rs/mio/blob/master/CHANGELOG.md)
- [Commits](tokio-rs/mio@v0.8.9...v0.8.11)

Updates `shlex` from 1.2.0 to 1.3.0
- [Changelog](https://github.com/comex/rust-shlex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/comex/rust-shlex/commits)

---
updated-dependencies:
- dependency-name: curve25519-dalek
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: h2
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: mio
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: shlex
  dependency-type: indirect
  dependency-group: cargo
...

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