Bump tornado from 6.5.4 to 6.5.5

Bumps [tornado](https://github.com/tornadoweb/tornado) from 6.5.4 to 6.5.5.
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](https://github.com/tornadoweb/tornado/compare/v6.5.4...v6.5.5)

---
updated-dependencies:
- dependency-name: tornado
  dependency-version: 6.5.5
  dependency-type: direct:production
...

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

requirements.txt

@@ -353,7 +353,7 @@ tomli==2.4.0 ; python_full_version < '3.11'
     #   alembic
     #   fastapi-cli
     #   pytest
-tornado==6.5.4
+tornado==6.5.5
     # via flower
 type-lens==0.2.6
     # via cappa