Bump tornado in /doc in the pip group across 1 directory

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


Updates `tornado` from 6.4 to 6.4.1
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.4.0...v6.4.1)

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

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

doc/requirements.in

@@ -4,6 +4,6 @@ nbconvert==7.16.4
 nbsphinx==0.9.4
 pandoc==2.3
 rowan==1.3.0post1
-tornado==6.4
+tornado==6.4.1
 sphinxcontrib-googleanalytics==0.4
 sphinx-copybutton==0.5.2

doc/requirements.txt

@@ -2,8 +2,6 @@
 #    uv pip compile requirements.in
 alabaster==0.7.16
     # via sphinx
-appnope==0.1.4
-    # via ipykernel
 asttokens==2.4.1
     # via stack-data
 attrs==23.2.0
@@ -188,7 +186,7 @@ stack-data==0.6.3
     # via ipython
 tinycss2==1.3.0
     # via nbconvert
-tornado==6.4
+tornado==6.4.1
     # via
     #   -r requirements.in
     #   ipykernel