BLD: avoid a deprecation warning from setuptools (PEP 735 license metadata)

Author: neutrinoceros

MANIFEST.in

@@ -27,4 +27,3 @@ include *.md
 include *.py
 include *.release
 include *.sh
-include LICENSE

pyproject.toml

@@ -3,7 +3,8 @@ requires = [
     "Cython>=0.29",
     "oldest-supported-numpy ; python_version < '3.9'",
     "numpy>=2.0.0rc1 ; python_version >= '3.9'",
-    "setuptools>=61", "setuptools_scm[toml]>=3.4"
+    "setuptools>=77.0.1",
+    "setuptools_scm[toml]>=3.4",
 ]
 build-backend = "setuptools.build_meta"
 
@@ -18,7 +19,8 @@ keywords = [
     "numpy", "netcdf", "data", "science", "network", "oceanography",
     "meteorology", "climate",
 ]
-license = {text = "MIT"}
+license = "MIT"
+license-files = ["LICENSE"]
 classifiers = [
     "Development Status :: 3 - Alpha",
     "Programming Language :: Python :: 3",
@@ -28,7 +30,6 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Intended Audience :: Science/Research",
-    "License :: OSI Approved :: MIT License",
     "Topic :: Software Development :: Libraries :: Python Modules",
     "Topic :: System :: Archiving :: Compression",
     "Operating System :: OS Independent",