python311Packages.django_5: Fix MIME UTF-8 surrogate escaping

pkgs/development/python-modules/django/5.nix

@@ -2,6 +2,7 @@
 , stdenv
 , buildPythonPackage
 , fetchPypi
+, fetchpatch2
 , pythonAtLeast
 , pythonOlder
 , substituteAll
@@ -64,6 +65,13 @@ buildPythonPackage rec {
     # disable test that excpects timezone issues
     ./django_5_disable_failing_tests.patch
 
+    (fetchpatch2 {
+      # https://github.com/django/django/pull/17979
+      name = "django-mime-utf8-surrogates.patch";
+      url = "https://github.com/django/django/commit/b231bcd19e57267ce1fc21d42d46f0b65fdcfcf8.patch";
+      hash = "sha256-HhmRwi24VkoPoh+NygAThCoMywoMwrLijU4ZsDfVU34=";
+    })
+
   ] ++ lib.optionals withGdal [
     (substituteAll {
       src = ./django_5_set_geos_gdal_lib.patch;