Update pillow requirement from ~=9.3.0 to ~=9.4.0 (#1421)

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](https://github.com/python-pillow/Pillow/compare/9.3.0...9.4.0)

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

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requirements.txt

@@ -11,7 +11,7 @@ rich==12.5.1
 toml==0.10.2
 translators==5.3.1
 pyttsx3==2.90
-Pillow~=9.3.0
+Pillow~=9.4.0
 tomlkit==0.11.4
 Flask==2.2.2
 clean-text==0.6.0