fix(vikunja): port (#2521)

charts/incubator/vikunja/Chart.yaml

@@ -25,7 +25,7 @@ maintainers:
 name: vikunja
 sources:
 - https://vikunja.io/docs
-version: 0.0.6
+version: 0.0.7
 annotations:
   truecharts.org/catagories: |
     - productivity

charts/incubator/vikunja/values.yaml

@@ -82,7 +82,7 @@ additionalContainers:
     image: "{{ .Values.frontendImage.repository }}:{{ .Values.frontendImage.tag }}"
     env:
       - name: VIKUNJA_HTTP_PORT
-        value: 8081
+        value: "8081"
   proxy:
     name: proxy
     image: "{{ .Values.nginxImage.repository }}:{{ .Values.nginxImage.tag }}"