Bump idna from 3.6 to 3.7

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](kjd/idna@v3.6...v3.7)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -7,7 +7,7 @@ charset-normalizer==3.3.2
 dj-database-url==2.1.0
 Django==4.2.11
 gunicorn==21.2.0
-idna==3.6
+idna==3.7
 psycopg==3.1.18
 psycopg-binary==3.1.18
 pycodestyle==2.11.1