build(deps): update sysinfo requirement from 0.25.1 to 0.26.0 (#670)

Updates the requirements on [sysinfo](https://github.com/GuillaumeGomez/sysinfo) to permit the latest version.
- [Release notes](https://github.com/GuillaumeGomez/sysinfo/releases)
- [Changelog](https://github.com/GuillaumeGomez/sysinfo/blob/master/CHANGELOG.md)
- [Commits](https://github.com/GuillaumeGomez/sysinfo/commits)

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

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kvdb-rocksdb/Cargo.toml

@@ -41,6 +41,6 @@ kvdb-shared-tests = { path = "../kvdb-shared-tests", version = "0.9" }
 rand = "0.8.0"
 tempfile = "3.1.0"
 keccak-hash = { path = "../keccak-hash" }
-sysinfo = "0.25.1"
+sysinfo = "0.26.0"
 ctrlc = "3.1.4"
 chrono = "0.4"