Bump idna from 3.7 to 3.8

Bumps [idna](https://github.com/kjd/idna) from 3.7 to 3.8.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.7...v3.8)

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

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

requirements.txt

@@ -14,7 +14,7 @@ django-debug-toolbar==4.4.6
 filelock==3.15.4
 gunicorn==23.0.0
 identify==2.6.0
-idna==3.7
+idna==3.8
 importlib-metadata==8.2.0
 nodeenv==1.9.1
 oauthlib==3.2.2