python.pkgs.pytest-django: fix hash patch

pkgs/development/python-modules/pytest-django/default.nix

···
     # Unpin setuptools-scm
     (fetchpatch {
       url = "https://github.com/pytest-dev/pytest-django/commit/25cbc3b395dcdeb92bdc9414e296680c2b9d602e.patch";
-      sha256 = "0mz3rcsv44pfzlxy3pv8mx87glmv34gy0d5aknvbzgb2a9niryws";
+      sha256 = "1mx06y4kz2zs41mb2h9bh5p4jc6s6hfsq6fghhsks5b7qak05xjp";
     })
   ];