Bump CPS to 3.5.6-SNAPSHOT

Issue-ID: CPS-2488

Change-Id: Ib17e4283de959ec4aab3c68bb3ba8018a10a10b2
Signed-off-by: egernug <gerard.nugent@est.tech>
diff --git a/version.properties b/version.properties
index 10de88b..ea83a94 100644
--- a/version.properties
+++ b/version.properties
@@ -22,7 +22,7 @@
 
 major=3
 minor=5
-patch=5
+patch=6
 
 base_version=${major}.${minor}.${patch}