fix pyproject.toml: require setuptools>=77.0.3

According to vllm-project/vllm#17389

Author: bkueng

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools", "setuptools-scm>=8"]
+requires = ["setuptools>=77.0.3", "setuptools-scm>=8"]
 build-backend = "setuptools.build_meta"
 
 [project]