Switch to newer license setup instead of classifier

Author: tomkins

pyproject.toml

@@ -5,14 +5,14 @@ description = 'DEV Content Files'
 readme = 'README.md'
 maintainers = [{ name = 'The Developer Society', email = 'studio@dev.ngo' }]
 requires-python = '>= 3.9'
+license = 'BSD-3-Clause'
 classifiers = [
   'Environment :: Web Environment',
   'Framework :: Django',
   'Framework :: Django :: 3.2',
   'Framework :: Django :: 4.2',
   'Framework :: Django :: 5.2',
   'Intended Audience :: Developers',
-  'License :: OSI Approved :: BSD License',
   'Operating System :: OS Independent',
   'Programming Language :: Python',
   'Programming Language :: Python :: 3',
@@ -27,7 +27,7 @@ classifiers = [
 Homepage = 'https://github.com/developersociety/devsoc-contentfiles'
 
 [build-system]
-requires = ['setuptools >= 61.0']
+requires = ['setuptools >= 77.0.3']
 build-backend = 'setuptools.build_meta'
 
 [tool.setuptools]