Bump idna from 3.3 to 3.15 in /docs

Bumps [idna](https://github.com/kjd/idna) from 3.3 to 3.15.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.3...v3.15)

---
updated-dependencies:
- dependency-name: idna
  dependency-version: '3.15'
  dependency-type: direct:production
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -17,7 +17,7 @@ freezegun==1.5.5 ; python_version >= "3.10" and python_version < "3.15"
 future==0.18.3 ; python_version >= "3.10" and python_version < "3.15" and sys_platform == "win32"
 ghp-import==2.1.0 ; python_version >= "3.10" and python_version < "3.15"
 griffelib==2.0.0 ; python_version >= "3.10" and python_version < "3.15"
-idna==3.3 ; python_version >= "3.10" and python_version < "3.15"
+idna==3.15 ; python_version >= "3.10" and python_version < "3.15"
 iniconfig==1.1.1 ; python_version >= "3.10" and python_version < "3.15"
 isort==8.0.1 ; python_version >= "3.10" and python_version < "3.15"
 jinja2==3.1.6 ; python_version >= "3.10" and python_version < "3.15"