[pip](deps): Update psutil requirement in the prod-deps group (#575)

Updates the requirements on [psutil](https://github.com/giampaolo/psutil) to permit the latest version.

Updates `psutil` to 7.0.0
- [Changelog](https://github.com/giampaolo/psutil/blob/master/HISTORY.rst)
- [Commits](giampaolo/psutil@release-6.1.0...release-7.0.0)

---
updated-dependencies:
- dependency-name: psutil
  dependency-type: direct:production
  dependency-group: prod-deps
...

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

Author: dependabot[bot]

requirements.txt

@@ -6,7 +6,7 @@ discord-ext-menus @ git+https://github.com/Rapptz/discord-ext-menus@8686b5d1bbc1
 msgspec>=0.19.0,<1
 python-dateutil>=2.9.0.post0,<3
 asyncpg>=0.30.0,<1
-psutil>=6.1.0,<7
+psutil>=6.1.0,<8
 pygit2>=1.16.0,<2
 async-lru>=2.0.4,<3
 prometheus-client>=0.20.0,<1