Bump notebook from 7.2.1 to 7.2.2 in /classical-ml in the pip group

Bumps the pip group in /classical-ml with 1 update: [notebook](https://github.com/jupyter/notebook).


Updates `notebook` from 7.2.1 to 7.2.2
- [Release notes](https://github.com/jupyter/notebook/releases)
- [Changelog](https://github.com/jupyter/notebook/blob/@jupyter-notebook/tree@7.2.2/CHANGELOG.md)
- [Commits](https://github.com/jupyter/notebook/compare/@jupyter-notebook/tree@7.2.1...@jupyter-notebook/tree@7.2.2)

---
updated-dependencies:
- dependency-name: notebook
  dependency-type: direct:production
  dependency-group: pip
...

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

Author: dependabot[bot]

classical-ml/jupyter-requirements.txt

@@ -1,4 +1,4 @@
 jupyterlab==4.2.4
 jupyterhub==5.1.0
-notebook==7.2.1
+notebook==7.2.2
 jupyter-server-proxy>=4.1.2