Bump tornado from 6.3.3 to 6.4.1 (#125)

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
...

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Author: dependabot[bot]

requirements.txt

@@ -9,5 +9,5 @@ pyjwt==2.4.0
 pyyaml==6.0
 requests==2.32.0
 there==0.0.9
-tornado==6.3.3
+tornado==6.4.1
 yieldbreaker==0.0.1