Bump tornado from 6.1.0 to 6.3.2

Bumps [tornado](https://github.com/tornadoweb/tornado) from 6.1.0 to 6.3.2.
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](https://github.com/tornadoweb/tornado/compare/v6.1.0...v6.3.2)

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

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

requirements.txt

@@ -2,4 +2,4 @@ aiohttp==3.7.4
 Brotli==1.0.9
 pycryptodome==3.10.1
 sqlalchemy==1.4.31
-tornado==6.1.0
+tornado==6.3.2