update chart version (#90)

I forgot to update the chart version for my last Pull requests.

Author: survivant

deploy/charts/Chart.yaml

@@ -34,7 +34,7 @@ keywords:
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.4.7
+version: 0.4.8
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to