This update for python-Django fixes the following issues

- CVE-2026-6873: signed cookie salt namespace collision in `django.http.HttpRequest.get_signed_cookie` (bsc#1267578).
- CVE-2026-7666: potential unencrypted email transmission via `STARTTLS` in the SMTP backend (bsc#1267579).
- CVE-2026-8404: potential exposure of private data via case-sensitive `Cache-Control` directives in
  `UpdateCacheMiddleware` (bsc#1267580).
- CVE-2026-35193: potential exposure of private data via missing `Vary: Authorization` in `UpdateCacheMiddleware`
  (bsc#1267576).
- CVE-2026-48587: potential exposure of private data via whitespace padding in `Vary` header (bsc#1267577).