Bump jupyterlab from 4.5.3 to 4.5.9

Bumps [jupyterlab](https://github.com/jupyterlab/jupyterlab) from 4.5.3 to 4.5.9.
- [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@4.5.3...@jupyterlab/lsp@4.5.9)

---
updated-dependencies:
- dependency-name: jupyterlab
  dependency-version: 4.5.9
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 click==8.3.1
 ipywidgets==8.1.8
-jupyterlab==4.5.3
+jupyterlab==4.5.9
 jupyterlab-git==0.51.4
 matplotlib==3.10.8
 myst-parser==5.0.0