ci: fix env

Author: ludovicm67

.github/workflows/previews-ods-ui.yaml

@@ -43,6 +43,9 @@ jobs:
           kubectl config set-credentials default "--token=${K8S_TOKEN}"
           kubectl config set-context default --cluster=default --namespace=piveau-previews --user=default
           kubectl config use-context default
+        env:
+          K8S_API_URL: ${{ secrets.K8S_API_URL }}
+          K8S_TOKEN: ${{ secrets.K8S_TOKEN }}
 
       - name: Generate manifests
         working-directory: ./opendata.swiss/ui/k8s