Bump pillow from 10.0.1 to 10.3.0 in /doc

Bumps [pillow](https://github.com/python-pillow/Pillow) from 10.0.1 to 10.3.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@10.0.1...10.3.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

doc/requirements.txt

@@ -43,7 +43,7 @@ packaging==21.0
 pandas==1.3.5
 pennylane==0.28.0
 PennyLane-Lightning==0.28
-Pillow==10.0.1
+Pillow==10.3.0
 pluggy==1.0.0
 protobuf==3.19.5
 PubChemPy==1.0.4