[VOL-5408]-Update versions of VOLTHA components for release

Change-Id: I1ea123736a9dd1b630c96c0383ae0630e35ecb96
Signed-off-by: Mahir Gunyel <mahir.gunyel@netsia.com>
diff --git a/VERSION b/VERSION
index bdf6e02..0f44168 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.6.3-dev4
+3.6.4