build(deps): update sysinfo requirement from 0.30.13 to 0.31.4

Updates the requirements on [sysinfo](https://github.com/GuillaumeGomez/sysinfo) to permit the latest version.
- [Changelog](https://github.com/GuillaumeGomez/sysinfo/blob/master/CHANGELOG.md)
- [Commits](GuillaumeGomez/sysinfo@v0.30.13...v0.31.4)

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

Signed-off-by: dependabot[bot] <support@github.com>

kvdb-rocksdb/Cargo.toml

@@ -39,6 +39,6 @@ kvdb-shared-tests = { path = "../kvdb-shared-tests", version = "0.11" }
 rand = "0.8.0"
 tempfile = "3.1.0"
 keccak-hash = { path = "../keccak-hash" }
-sysinfo = "0.30.13"
+sysinfo = "0.31.4"
 ctrlc = "3.1.4"
 chrono = "0.4"