Bump the actions group across 1 directory with 4 updates

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

Updates `jupyterlab` to 4.3.4
- [Release notes](https://github.com/jupyterlab/jupyterlab/releases)
- [Changelog](https://github.com/jupyterlab/jupyterlab/blob/@jupyterlab/lsp@4.3.4/CHANGELOG.md)
- [Commits](https://github.com/jupyterlab/jupyterlab/compare/@jupyterlab/lsp@4.2.5...@jupyterlab/lsp@4.3.4)

Updates `jupyterlite-core` from 0.4.3 to 0.4.5
- [Release notes](https://github.com/jupyterlite/jupyterlite/releases)
- [Changelog](https://github.com/jupyterlite/jupyterlite/blob/main/CHANGELOG.md)
- [Commits](jupyterlite/jupyterlite@v0.4.3...v0.4.5)

Updates `notebook` to 7.3.2
- [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@7.2.2...@jupyter-notebook/tree@7.3.2)

Updates `jupyterlite-pyodide-kernel` from 0.4.3 to 0.4.7
- [Release notes](https://github.com/jupyterlite/pyodide-kernel/releases)
- [Changelog](https://github.com/jupyterlite/pyodide-kernel/blob/v0.4.7/CHANGELOG.md)
- [Commits](jupyterlite/pyodide-kernel@v0.4.3...v0.4.7)

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

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

Author: dependabot[bot]

demo/requirements.txt

@@ -1,10 +1,10 @@
 # Core modules (mandatory)
-jupyterlite-core==0.4.3
-jupyterlab~=4.2.5
-notebook~=7.2.2
+jupyterlite-core==0.4.5
+jupyterlab~=4.3.4
+notebook~=7.3.2
 
 # Python kernel (optional)
-jupyterlite-pyodide-kernel==0.4.3
+jupyterlite-pyodide-kernel==0.4.7
 
 # Language support (optional)
 jupyterlab-language-pack-fr-FR