Bump jupyter-server from 2.9.1 to 2.11.2 in /.docker (#1515)

Bumps [jupyter-server](https://github.com/jupyter-server/jupyter_server) from 2.9.1 to 2.11.2.
- [Release notes](https://github.com/jupyter-server/jupyter_server/releases)
- [Changelog](https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md)
- [Commits](jupyter-server/jupyter_server@v2.9.1...v2.11.2)

---
updated-dependencies:
- dependency-name: jupyter-server
  dependency-type: indirect
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>