[pip](deps): Bump psutil from 5.9.7 to 5.9.8 (#55)

Bumps [psutil](https://github.com/giampaolo/psutil) from 5.9.7 to 5.9.8.
- [Changelog](https://github.com/giampaolo/psutil/blob/master/HISTORY.rst)
- [Commits](giampaolo/psutil@release-5.9.7...release-5.9.8)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -3,7 +3,7 @@ uvloop==0.19.0 ; sys_platform != "win32"
 winloop==0.1.0 ; sys_platform == "win32"
 asyncpg==0.29.0
 discord-ext-menus @ git+https://github.com/Rapptz/discord-ext-menus@8686b5d1bbc1d3c862292eb436ab630d6e9c9b53
-psutil==5.9.7
+psutil==5.9.8
 pygit2==1.13.3
 python-dateutil==2.8.2
 click==8.1.7