Bump tornado from 6.4 to 6.4.2 in /requirements (#89)

Bumps [tornado](https://github.com/tornadoweb/tornado) from 6.4 to 6.4.2.
- [Changelog](https://github.com/tornadoweb/tornado/blob/v6.4.2/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.4.0...v6.4.2)

---
updated-dependencies:
- dependency-name: tornado
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements/dev_3.11.txt

@@ -649,7 +649,7 @@ torchmetrics==1.2.1
     #   lightning
     #   pytorch-lightning
     #   scvi-tools
-tornado==6.4
+tornado==6.4.2
     # via
     #   ipykernel
     #   jupyter-client