Update setuptools build dependency.

Author: whitequark

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools~=67.0", "setuptools_scm[toml]~=7.0"]
+requires = ["setuptools~=78.0", "setuptools_scm[toml]~=7.0"]
 build-backend = "setuptools.build_meta"
 
 [project]