Bump tornado from 6.3.3 to 6.4 (#309)

Bumps [tornado](https://github.com/tornadoweb/tornado) from 6.3.3 to 6.4.
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.3.3...v6.4.0)

---
updated-dependencies:
- dependency-name: tornado
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -5,7 +5,7 @@ tgbot-ping==1.0.7
 redis==5.0.1
 apscheduler==3.10.4
 pymongo==4.6.0
-tornado==6.3.3
+tornado==6.4
 captcha==0.5.0
 passlib==1.7.4
 fakeredis==2.20.1