build(deps): bump tornado from 6.2.0 to 6.4.2 in /scripts

Bumps [tornado](https://github.com/tornadoweb/tornado) from 6.2.0 to 6.4.2.
- [Changelog](https://github.com/tornadoweb/tornado/blob/v6.4.2/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.2.0...v6.4.2)

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

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

scripts/moonraker-requirements.txt

@@ -1,7 +1,7 @@
 # Python dependencies for Moonraker
 --find-links=python_wheels
 tornado==6.2.0 ; python_version=='3.7'
-tornado==6.4.1 ; python_version>='3.8'
+tornado==6.4.2 ; python_version>='3.8'
 pyserial==3.4
 pyserial-asyncio==0.6
 pillow==9.5.0 ; python_version=='3.7'