Prepare release purchase_request_quotation-6.0.4

--HG--
branch : 6.0

modules/purchase_request_quotation/CHANGELOG

@@ -1,3 +1,7 @@
+Version 6.0.4 - 2023-02-05
+--------------------------
+* Bug fixes (see mercurial logs for details)
+
 Version 6.0.3 - 2022-12-06
 --------------------------
 * Bug fixes (see mercurial logs for details)

modules/purchase_request_quotation/COPYRIGHT

@@ -1,8 +1,8 @@
 Copyright (C) 2017-2020 Maxime Richez
 Copyright (C) 2017-2019 Thierry Bruyere
 Copyright (C) 2017-2020 SALUC SA
-Copyright (C) 2018-2022 Cédric Krier
-Copyright (C) 2018-2022 B2CK
+Copyright (C) 2018-2023 Cédric Krier
+Copyright (C) 2018-2023 B2CK
 
 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