Prepare release purchase_request-6.0.3

--HG--
branch : 6.0

modules/purchase_request/CHANGELOG

@@ -1,3 +1,7 @@
+Version 6.0.3 - 2023-02-05
+--------------------------
+* Bug fixes (see mercurial logs for details)
+
 Version 6.0.2 - 2023-01-15
 --------------------------
 * Bug fixes (see mercurial logs for details)

modules/purchase_request/COPYRIGHT

@@ -1,8 +1,8 @@
 Copyright (C) 2016-2021 Nicolas Évrard.
 Copyright (C) 2013-2015 NaN-tic.
-Copyright (C) 2008-2022 Cédric Krier.
+Copyright (C) 2008-2023 Cédric Krier.
 Copyright (C) 2008-2013 Bertrand Chenal.
-Copyright (C) 2008-2022 B2CK SPRL.
+Copyright (C) 2008-2023 B2CK SPRL.
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by