update copyright date

Change-Id: I33ca01c957d3058c10081555637be835d5cb4446
diff --git a/src/dialogs.c b/src/dialogs.c
index a09469b..5a31f75 100644
--- a/src/dialogs.c
+++ b/src/dialogs.c
@@ -99,6 +99,7 @@
         "Emmanuel Lepage-Vallée",
         "Frédéric Guimont",
         "Guillaume Roguez",
+        "Hadrien De Sousa",
         "Julien Grossholtz",
         "Kateryna Kostiuk",
         "Loïc Siret",