Merge pull request #207 from chillenb/spdx

fix LGPLv3 license string

Author: Lnaden

cookiecutter.json

@@ -9,7 +9,7 @@
 
         "MIT",
         "BSD-3-Clause",
-        "LGPLv3",
+        "LGPL-3.0-or-later",
         "Not Open Source"
     ],
     "dependency_source": [