Bump jupyterlab from 4.2.5 to 4.4.8 in /samples/python

Bumps [jupyterlab](https://github.com/jupyterlab/jupyterlab) from 4.2.5 to 4.4.8.
- [Release notes](https://github.com/jupyterlab/jupyterlab/releases)
- [Changelog](https://github.com/jupyterlab/jupyterlab/blob/main/RELEASE.md)
- [Commits](https://github.com/jupyterlab/jupyterlab/compare/@jupyterlab/lsp@4.2.5...@jupyterlab/lsp@4.4.8)

---
updated-dependencies:
- dependency-name: jupyterlab
  dependency-version: 4.4.8
  dependency-type: direct:production
...

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

Author: dependabot[bot]

samples/python/requirements.txt

@@ -3,4 +3,4 @@ numpy==1.26.3
 pyopencl==2023.1.4
 pillow==10.3.0
 
-jupyterlab==4.2.5
+jupyterlab==4.4.8