Bump jupyterlab in /ai/gen-ai-agents/travel-agent/files

Bumps [jupyterlab](https://github.com/jupyterlab/jupyterlab) from 4.4.2 to 4.5.7.
- [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@4.4.2...@jupyterlab/lsp@4.5.7)

---
updated-dependencies:
- dependency-name: jupyterlab
  dependency-version: 4.5.7
  dependency-type: direct:production
...

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

Author: dependabot[bot]

ai/gen-ai-agents/travel-agent/files/requirements.txt

@@ -66,7 +66,7 @@ jupyter_client==8.6.3
 jupyter_core==5.7.2
 jupyter_server==2.16.0
 jupyter_server_terminals==0.5.3
-jupyterlab==4.4.2
+jupyterlab==4.5.7
 jupyterlab_pygments==0.3.0
 jupyterlab_server==2.27.3
 jupyterlab_widgets==3.0.15