Enable build for older py-setuptools.

--- pyproject.toml.orig	2026-03-24 16:57:37 UTC
+++ pyproject.toml
@@ -1,13 +1,12 @@ build-backend = "setuptools.build_meta"
 [build-system]
 build-backend = "setuptools.build_meta"
-requires = [ "setuptools>=77.0.3" ]
+requires = [ "setuptools" ]
 
 [project]
 name = "djangorestframework"
 description = "Web APIs for Django, made easy."
 readme = "README.md"
-license = "BSD-3-Clause"
-license-files = [ "LICENSE.md" ]
+license = { text="BSD-3-Clause" }
 authors = [ { name = "Tom Christie", email = "tom@tomchristie.com" } ]
 requires-python = ">=3.10"
 classifiers = [