Update gatekeeper-mutating-webhook-configuration-mutatingwebhookconfiguration.yaml

As this should always be string, quote it. This prevents "true" being set as true

Author: sanderma

charts/gatekeeper/templates/gatekeeper-mutating-webhook-configuration-mutatingwebhookconfiguration.yaml

@@ -46,7 +46,7 @@ webhooks:
       operator: NotIn
       values:
       {{- range $value }}
-      - {{ . }}
+      - {{ . | quote }}
       {{- end }}
     {{- end }}
   objectSelector: {{ toYaml .Values.mutatingWebhookObjectSelector | nindent 4 }}