Bump idna from 3.6 to 3.7 (#694)

Bumps [idna](https://github.com/kjd/idna) from 3.6 to 3.7.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](https://github.com/kjd/idna/compare/v3.6...v3.7)

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

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

requirements.txt

@@ -43,7 +43,7 @@ djangorestframework==3.14.0
     # via -r requirements.in
 huey==2.5.0
     # via -r requirements.in
-idna==3.6
+idna==3.7
     # via requests
 josepy==1.14.0
     # via mozilla-django-oidc