misc: update copyright date

Change-Id: I1579fd8e6d77eb67b322ef22dedf0a1c8e6f1734
diff --git a/conversationsfilterwidget.h b/conversationsfilterwidget.h
index 22c5c7e..584bed7 100644
--- a/conversationsfilterwidget.h
+++ b/conversationsfilterwidget.h
@@ -1,5 +1,5 @@
 /***************************************************************************
- * Copyright (C) 2018 by Savoir-faire Linux                                *
+ * Copyright (C) 2019-2019 by Savoir-faire Linux                                *
  * Author: Andreas Traczyk <andreas.traczyk@savoirfairelinux.com>          *
  *                                                                         *
  * This program is free software; you can redistribute it and/or modify    *