Licence metadata update

Author: urschrei

pyproject.toml

@@ -7,7 +7,8 @@ dependencies = [
     "numpy >= 2.0.0",
 ]
 authors = [{ name = "Stephan Hügel", email = "[email protected]" }]
-license = {file = "LICENSE.md"}
+license = "BlueOak-1.0.0"
+license-files = ["LICENSE.md"]
 keywords = ["Geo", "Polyline"]
 classifiers = [
     "Programming Language :: Python",