bump Helm chart to 3.6.4

Signed-off-by: Aleksandar Stanchev <[email protected]>

Author: alstanchev

deployment/helm/ditto/Chart.yaml

@@ -16,7 +16,7 @@ description: |
   A digital twin is a virtual, cloud based, representation of his real world counterpart
   (real world “Things”, e.g. devices like sensors, smart heating, connected cars, smart grids, EV charging stations etc).
 type: application
-version: 3.6.3  # chart version is effectively set by release-job
+version: 3.6.4  # chart version is effectively set by release-job
 appVersion: 3.6.3
 keywords:
   - iot-chart