Bump tornado from 6.3.3 to 6.4.1 in the pip group across 1 directory

Bumps the pip group with 1 update in the / directory: [tornado](https://github.com/tornadoweb/tornado).


Updates `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
  dependency-group: pip
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -4,6 +4,6 @@ pyflakes==2.1.1
 redis==4.4.4
 requests==2.32.0
 # needed for tashi, rpyc==4.1.4
-tornado==6.3.3
+tornado==6.4.1
 urllib3==1.26.18
 docker==5.0.3