build(deps): bump tornado from 6.5.5 to 6.5.7

Bumps [tornado](https://github.com/tornadoweb/tornado) from 6.5.5 to 6.5.7.
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.5.5...v6.5.7)

---
updated-dependencies:
- dependency-name: tornado
  dependency-version: 6.5.7
  dependency-type: direct:production
...

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

Author: dependabot[bot]

docs-requirements.txt

@@ -48,7 +48,7 @@ remoulade[limits]>=5.0.0 ; python_version >= "3.12"
 remoulade>=0.50.0 ; python_version < "3.12"
 sqlalchemy>=1.0
 starlette~=0.50
-tornado>=5.1.1
+tornado>=6.5.7
 tortoise-orm>=0.17.0
 wrapt~=2.1