Specify version in chart as string explicitly

Chart.yaml

@@ -5,10 +5,10 @@ type: application
 # 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: 2.0.4
+version: "2.0.4"
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application.
-appVersion: 2.0.4
+appVersion: "2.0.4"
 maintainers:
   - name: EOX IT Services GmbH
     url: https://eox.at