Bump idna from 3.8 to 3.9 (#11599)

Bumps [idna](https://github.com/kjd/idna) from 3.8 to 3.9.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.8...v3.9)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

ci-constraints-requirements.txt

@@ -69,7 +69,7 @@ filelock==3.12.2 ; python_full_version < '3.8'
     # via virtualenv
 filelock==3.16.0 ; python_full_version >= '3.8'
     # via virtualenv
-idna==3.8
+idna==3.9
     # via requests
 imagesize==1.4.1
     # via sphinx