Minor: fix copyright date.

olivier-stasse · Olivier Stasse · commit d1e67ca88437 · 2020-05-12T06:50:01.000+02:00
diff --git a/tests/eiquadprog-both.cpp b/tests/eiquadprog-both.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright (c) 2019 CNRS
+// Copyright (c) 2020 CNRS
 //
 // This file is part of eiquadprog.
 //
