Specify license as GPL-3.0-or-later

Author: ifd3f

meta.yaml

@@ -9,7 +9,7 @@ source:
 
 about:
   home: https://github.com/ALescoulie/MDSAPT
-  license: GPL-3.0
+  license: GPL-3.0-or-later
   license_file: LICENSE
   license_family: GPL3
   summary: SAPT Calculations for MDAnalysis

setup.py

@@ -30,7 +30,7 @@
     long_description_content_type="text/markdown",
     version=versioneer.get_version(),
     cmdclass=versioneer.get_cmdclass(),
-    license='GPL-3.0',
+    license='GPL-3.0-or-later',
 
     # Register the CLI entrypoint
     entry_points = {