Allow DNS egress to resolve hostnames (#20437)

Signed-off-by: Glen Takahashi <glen@glentaka.com>

stable/redis/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: redis
-version: 10.4.0
+version: 10.4.1
 appVersion: 5.0.7
 description: Open source, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.
 keywords:

stable/redis/templates/networkpolicy.yaml

@@ -18,6 +18,10 @@ spec:
     - Ingress
     - Egress
   egress:
+    # Allow dns resolution
+    - ports:
+      - port: 53
+        protocol: UDP
     # Allow outbound connections to other cluster pods
     - ports:
       - port: {{ .Values.redisPort }}