build(deps-dev): bump psutil from 5.9.6 to 5.9.8 in /requirements

Bumps [psutil](https://github.com/giampaolo/psutil) from 5.9.6 to 5.9.8.
- [Changelog](https://github.com/giampaolo/psutil/blob/master/HISTORY.rst)
- [Commits](giampaolo/psutil@release-5.9.6...release-5.9.8)

---
updated-dependencies:
- dependency-name: psutil
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

requirements/requirements-dev.txt

@@ -151,7 +151,7 @@ pluggy==1.3.0
     # via pytest
 protobuf==3.20.3
     # via -r requirements.txt
-psutil==5.9.6
+psutil==5.9.8
     # via
     #   -r requirements-dev.in
     #   locust