build(deps): bump tornado from 6.3.2 to 6.5

Bumps [tornado](https://github.com/tornadoweb/tornado) from 6.3.2 to 6.5.
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.3.2...v6.5.0)

---
updated-dependencies:
- dependency-name: tornado
  dependency-version: '6.5'
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -75,7 +75,7 @@ terminado==0.9.2
 testpath==0.4.4
 thinc==8.0.1
 threadpoolctl==2.1.0
-tornado==6.3.2
+tornado==6.5
 tqdm==4.66.3
 traitlets==5.0.5
 typer==0.3.2