Bumping VERSION after VOLTHA-2.9 release

Change-Id: I8978c46b1616f34864f9bef98636b99d257382c4
diff --git a/bbsim/Chart.yaml b/bbsim/Chart.yaml
index a4d95b1..85200a2 100644
--- a/bbsim/Chart.yaml
+++ b/bbsim/Chart.yaml
@@ -16,5 +16,5 @@
 description: Broadband Simulator
 icon: https://guide.opencord.org/logos/cord.svg
 apiVersion: v1
-version: 4.5.2
+version: 4.6.0-dev
 appVersion: 1.9.1