Bump zipp from 3.11.0 to 3.19.1 in /docs

Bumps [zipp](https://github.com/jaraco/zipp) from 3.11.0 to 3.19.1.
- [Release notes](https://github.com/jaraco/zipp/releases)
- [Changelog](https://github.com/jaraco/zipp/blob/main/NEWS.rst)
- [Commits](jaraco/zipp@v3.11.0...v3.19.1)

---
updated-dependencies:
- dependency-name: zipp
  dependency-type: indirect
...

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

docs/requirements.txt

@@ -36,5 +36,5 @@ six==1.16.0
     # via python-dateutil
 watchdog==2.2.1
     # via mkdocs
-zipp==3.11.0
+zipp==3.19.1
     # via importlib-metadata