⬆️ Update psutil requirement from ~=5.9.8 to ~=6.0.0

Updates the requirements on [psutil](https://github.com/giampaolo/psutil) to permit the latest version.
- [Changelog](https://github.com/giampaolo/psutil/blob/master/HISTORY.rst)
- [Commits](giampaolo/psutil@release-5.9.8...release-6.0.0)

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

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

requirements.txt

@@ -2,7 +2,7 @@
 Pillow~=10.3.0         # Image generation
 pyserial~=3.5          # Serial link to communicate with the display
 PyYAML~=6.0.1          # For themes files
-psutil~=5.9.8          # CPU / disk / network metrics
+psutil~=6.0.0          # CPU / disk / network metrics
 pystray~=0.19.5        # Tray icon (all OS)
 babel~=2.15.0          # Date/time formatting
 ruamel.yaml~=0.18.6    # For configuration editor