build(deps-dev): update jupyterlab requirement from >=4.4.3 to >=4.5.6

Updates the requirements on [jupyterlab](https://github.com/jupyterlab/jupyterlab) to permit the latest version.
- [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@4.4.3...@jupyterlab/lsp@4.5.6)

---
updated-dependencies:
- dependency-name: jupyterlab
  dependency-version: 4.5.6
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -31,7 +31,7 @@ build-backend = "hatchling.build"
 
 [dependency-groups]
 dev = [
-    "jupyterlab>=4.4.3",
+    "jupyterlab>=4.5.6",
     "pytest>=8.4.0",
     "pytest-cov>=6.2.1",
     "pytest-github-actions-annotate-failures>=0.3.0",