Bump jupyter-server-proxy from 3.2.1 to 3.2.3 in /session/trainium-chip

Bumps [jupyter-server-proxy](https://github.com/jupyterhub/jupyter-server-proxy) from 3.2.1 to 3.2.3.
- [Release notes](https://github.com/jupyterhub/jupyter-server-proxy/releases)
- [Changelog](https://github.com/jupyterhub/jupyter-server-proxy/blob/v3.2.3/CHANGELOG.md)
- [Commits](jupyterhub/jupyter-server-proxy@v3.2.1...v3.2.3)

---
updated-dependencies:
- dependency-name: jupyter-server-proxy
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

session/trainium-chip/requirements.txt

@@ -92,7 +92,7 @@ jsonschema-specifications==2023.7.1
 jupyter==1.0.0
 jupyter-console==6.6.3
 jupyter-server==1.18.0
-jupyter-server-proxy==3.2.1
+jupyter-server-proxy==3.2.3
 jupyter_client==8.6.0
 jupyter_core==5.7.1
 jupyterlab-widgets==3.0.9