⬆️ Update pillow requirement from ~=10.3.0 to ~=10.4.0

Updates the requirements on [pillow](https://github.com/python-pillow/Pillow) to permit the latest version.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@10.3.0...10.4.0)

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

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

requirements.txt

@@ -1,5 +1,5 @@
 # Python packages requirements
-Pillow~=10.3.0         # Image generation
+Pillow~=10.4.0         # 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