test(helm test): fix intentionally failing helm test

utils/helm/speckle-server/templates/test/test-deployment.yaml

@@ -17,7 +17,6 @@ spec:
         - name: SPECKLE_SERVER
           value: https://{{ .Values.domain }}
         - name: SERVER_VERSION
-          value: "2.3.2"
-          # value: {{ .Values.docker_image_tag }}
+          value: {{ .Values.docker_image_tag }}
   restartPolicy: Never
 {{- end }}