Bump the actions group with 1 update

Updates the requirements on [notebook](https://github.com/jupyter/notebook) to permit the latest version.

Updates `notebook` to 7.0.8
- [Release notes](https://github.com/jupyter/notebook/releases)
- [Changelog](https://github.com/jupyter/notebook/blob/@jupyter-notebook/tree@7.0.8/CHANGELOG.md)
- [Commits](https://github.com/jupyter/notebook/compare/@jupyter-notebook/tree@7.0.7...@jupyter-notebook/tree@7.0.8)

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

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

demo/requirements.txt

@@ -1,7 +1,7 @@
 # Core modules (mandatory)
 jupyterlite-core==0.2.3
 jupyterlab~=4.1.0
-notebook~=7.0.7
+notebook~=7.0.8
 
 # Python kernel (optional)
 jupyterlite-pyodide-kernel==0.2.2