Fix dex client secret (#983)

Author: Nuckal777

charts/kubernikus/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 description: A Helm chart for Kubernetes
 name: kubernikus
 type: application
-version: 0.3.20
+version: 0.3.21
 dependencies:
   - name: k8sniff
     repository: file://../k8sniff

charts/kubernikus/templates/dex-config.yaml

@@ -64,7 +64,7 @@ data:
       - https://{{ .Values.domain }}/auth/callback # for dashboard access
       - http://localhost:33768/auth/callback
       name: kubernikus
-      secret: $DEX_CLIENT_SECRET
+      secretEnv: DEX_CLIENT_SECRET
 ---
 apiVersion: v1
 kind: Secret