[releng] Update to Sirius 6.4.0 official release

Change-Id: Iea1e0659d6053f5f3be67149dd0db7c7d665b087
Signed-off-by: Wayne Beaton <wayne.beaton@eclipse-foundation.org>
Signed-off-by: Philippe DUL <philippe.dul@thalesgroup.com>
2 files changed