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] <[email protected]>

requirements.txt

@@ -2,7 +2,7 @@ decorator==4.4.0
 numpy==1.22.0
 psutil==5.6.6
 scipy==1.10.0
-tornado==6.3.3
+tornado==6.4.1
 xgboost==0.90
 antlr4-python3-runtime==4.7.2
 typed-ast==1.4.0