addon/podsecuritypolicies: Add projected volumes permission

Signed-off-by: ArthurSens <arthursens2005@gmail.com>

jsonnet/kube-prometheus/addons/podsecuritypolicies.libsonnet

@@ -16,6 +16,7 @@ local restrictedPodSecurityPolicy = {
       'configMap',
       'emptyDir',
       'secret',
+      'projected',
       // Assume that persistentVolumes set up by the cluster admin are safe to use.
       'persistentVolumeClaim',
     ],