Bump systemstat from 0.1.11 to 0.2.3

Bumps [systemstat](https://github.com/valpackett/systemstat) from 0.1.11 to 0.2.3.
- [Release notes](https://github.com/valpackett/systemstat/releases)
- [Commits](valpackett/systemstat@v0.1.11...v0.2.3)

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

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