Use nwe format for license in pyproject.toml

Author: benoit74

pyproject.toml

@@ -17,7 +17,7 @@ authors = [
     {name = "openZIM", email = "[email protected]"},
 ]
 readme = "README.md"
-license = {text = "GPL-3.0-or-later"}
+license = "GPL-3.0-or-later"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Topic :: Utilities",
@@ -36,7 +36,6 @@ classifiers = [
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
     "Typing :: Stubs Only",
-    "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
     "Operating System :: MacOS",
     "Operating System :: POSIX",
 ]