Update notebook requirement from ~=7.4.2 to ~=7.4.3

Updates the requirements on [notebook](https://github.com/jupyter/notebook) to permit the latest version.
- [Release notes](https://github.com/jupyter/notebook/releases)
- [Changelog](https://github.com/jupyter/notebook/blob/@jupyter-notebook/tree@7.4.3/CHANGELOG.md)
- [Commits](https://github.com/jupyter/notebook/compare/@jupyter-notebook/tree@7.4.2...@jupyter-notebook/tree@7.4.3)

---
updated-dependencies:
- dependency-name: notebook
  dependency-version: 7.4.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -8,7 +8,7 @@ azure-storage-blob~=12.25.1
 ipycanvas~=0.13.3
 ipykernel~=6.29.5
 matplotlib~=3.10.3
-notebook~=7.4.3
+notebook~=7.4.4
 numpy
 openai~=1.93.0
 opencv-python~=4.11.0.86