[copyright] Updated copyright

cmastalli · jcarpent · commit 88e3906e2048 · 2023-07-31T13:19:02.000+02:00
diff --git a/include/eigenpy/copyable.hpp b/include/eigenpy/copyable.hpp
@@ -1,5 +1,5 @@
 //
-// Copyright (c) 2016-2021 CNRS INRIA
+// Copyright (c) 2016-2023 CNRS INRIA Heriot-Watt University
 //
 
 #ifndef __eigenpy_utils_copyable_hpp__
