Amazon AppStream Update: AWS Appstream support for IPv6

Author: AWS

.changes/next-release/feature-AmazonAppStream-ec46250.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "Amazon AppStream",
+    "contributor": "",
+    "description": "AWS Appstream support for IPv6"
+}

services/appstream/src/main/resources/codegen-resources/service-2.json

@@ -4712,6 +4712,10 @@
           "shape":"String",
           "documentation":"<p>The private IP address of the elastic network interface that is attached to instances in your VPC.</p>"
         },
+        "EniIpv6Addresses":{
+          "shape":"StringList",
+          "documentation":"<p>The IPv6 addresses of the elastic network interface that is attached to instances in your VPC.</p>"
+        },
         "EniId":{
           "shape":"String",
           "documentation":"<p>The resource identifier of the elastic network interface that is attached to instances in your VPC. All network interfaces have the eni-xxxxxxxx resource identifier.</p>"