Bump tornado from 6.3.3 to 6.4.1

Bumps [tornado](https://github.com/tornadoweb/tornado) from 6.3.3 to 6.4.1.
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.3.3...v6.4.1)

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

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

requirements.txt

@@ -22,4 +22,4 @@ psycopg2-binary==2.9.3
 pyyaml==6.0
 requests==2.31.0
 tabulate==0.8.9
-tornado==6.3.3
+tornado==6.4.1