Bump idna from 3.7 to 3.10 in /docs

Bumps [idna](https://github.com/kjd/idna) from 3.7 to 3.10.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.7...v3.10)

---
updated-dependencies:
- dependency-name: idna
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -3,7 +3,7 @@ Babel==2.16.0
 certifi==2024.7.4
 chardet==3.0.4
 docutils==0.14
-idna==3.7
+idna==3.10
 imagesize==0.7.1
 Jinja2==3.1.4
 MarkupSafe==0.23