build(deps): bump tornado 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 6.5.2 to 6.5.5
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.5.2...v6.5.5)

---
updated-dependencies:
- dependency-name: tornado
  dependency-version: 6.5.5
  dependency-type: direct:production
  dependency-group: pip
...

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

Author: dependabot[bot]

requirements.lock.txt

@@ -94,7 +94,7 @@ soupsieve==2.8
 stack-data==0.6.3
 terminado==0.18.1
 tinycss2==1.4.0
-tornado==6.5.2
+tornado==6.5.5
 traitlets==5.14.3
 typing_extensions==4.15.0
 tzdata==2025.2