Bump the actions group with 3 updates (#24)

* Bump the actions group with 3 updates

Updates the requirements on [jupyterlite-core](https://github.com/jupyterlite/jupyterlite), [jupyterlab](https://github.com/jupyterlab/jupyterlab) and [notebook](https://github.com/jupyter/notebook) to permit the latest version.

Updates `jupyterlite-core` from 0.2.3 to 0.3.0
- [Release notes](https://github.com/jupyterlite/jupyterlite/releases)
- [Changelog](https://github.com/jupyterlite/jupyterlite/blob/main/CHANGELOG.md)
- [Commits](jupyterlite/jupyterlite@v0.2.3...v0.3.0)

Updates `jupyterlab` to 4.1.5
- [Release notes](https://github.com/jupyterlab/jupyterlab/releases)
- [Changelog](https://github.com/jupyterlab/jupyterlab/blob/@jupyterlab/lsp@4.1.5/CHANGELOG.md)
- [Commits](https://github.com/jupyterlab/jupyterlab/compare/@jupyterlab/lsp@4.0.12...@jupyterlab/lsp@4.1.5)

Updates `notebook` to 7.1.2
- [Release notes](https://github.com/jupyter/notebook/releases)
- [Changelog](https://github.com/jupyter/notebook/blob/main/CHANGELOG.md)
- [Commits](https://github.com/jupyter/notebook/compare/@jupyter-notebook/tree@7.0.8...@jupyter-notebook/tree@7.1.2)

---
updated-dependencies:
- dependency-name: jupyterlite-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
- dependency-name: jupyterlab
  dependency-type: direct:production
  dependency-group: actions
- dependency-name: notebook
  dependency-type: direct:production
  dependency-group: actions
...

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

* Update requirements.txt

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jeremy Tuloup <jeremy.tuloup@gmail.com>

demo/requirements.txt

@@ -1,10 +1,10 @@
 # Core modules (mandatory)
-jupyterlite-core==0.2.3
-jupyterlab~=4.0.12
-notebook~=7.0.8
+jupyterlite-core==0.3.0
+jupyterlab~=4.1.5
+notebook~=7.1.2
 
 # Python kernel (optional)
-jupyterlite-pyodide-kernel==0.2.3
+jupyterlite-pyodide-kernel==0.3.0
 
 # Language support (optional)
 jupyterlab-language-pack-fr-FR