Update pyproject.toml.

Author: anntzer

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
 requires = [
-    "setuptools>=62",
+    "setuptools>=77",
     "setuptools_scm[toml]>=6.2",
     "pybind11>=2.8.0",
     "pycairo>=1.16.0; os_name == 'posix'",  # Removed for manylinux build.
@@ -12,12 +12,9 @@ name = "mplcairo"
 description = "A (new) cairo backend for Matplotlib."
 readme = "README.rst"
 authors = [{name = "Antony Lee"}]
-license = {text = "MIT"}
+license = "MIT"
 classifiers = [
-    "Development Status :: 4 - Beta",
     "Framework :: Matplotlib",
-    "License :: OSI Approved :: MIT License",
-    "Programming Language :: Python :: 3",
 ]
 requires-python = ">=3.8"
 dependencies = [