Fix license config deprecation warnings

They switched to a new format for licenses. See:

https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license

Author: oschwald

pyproject.toml

@@ -1,7 +1,3 @@
-[build-system]
-requires = ["setuptools>=68.2.2", "setuptools-scm", "wheel"]
-build-backend = "setuptools.build_meta"
-
 [project]
 name = "maxminddb"
 version = "2.6.3"
@@ -11,13 +7,12 @@ authors = [
 ]
 requires-python = ">=3.9"
 readme = "README.rst"
-license = {text = "Apache License, Version 2.0"}
+license = "Apache-2.0"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Environment :: Web Environment",
     "Intended Audience :: Developers",
     "Intended Audience :: System Administrators",
-    "License :: OSI Approved :: Apache Software License",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.9",
@@ -46,6 +41,14 @@ lint = [
     "ruff>=0.11.6",
 ]
 
+[build-system]
+requires = [
+    "setuptools>=77.0.3",
+    "setuptools-scm",
+    "wheel",
+]
+build-backend = "setuptools.build_meta"
+
 [tool.setuptools.package-data]
 maxminddb = ["py.typed"]