Update date in info.json

Author: jgrewe

odml/info.json

@@ -2,7 +2,7 @@
   "VERSION": "1.5.2",
   "FORMAT_VERSION": "1.1",
   "AUTHOR": "Hagen Fritsch, Jan Grewe, Christian Kellner, Achilleas Koutsou, Michael Sonntag, Lyuba Zehl",
-  "COPYRIGHT": "(c) 2011-2022, German Neuroinformatics Node",
+  "COPYRIGHT": "(c) 2011-2023, German Neuroinformatics Node",
   "CONTACT": "dev@g-node.org",
   "HOMEPAGE": "https://github.com/G-Node/python-odml",
   "CLASSIFIERS": [