Updated endpoints.json and partitions.json.

Author: AWS

.changes/next-release/feature-AWSSDKforJavav2-0443982.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "AWS SDK for Java v2",
+    "contributor": "",
+    "description": "Updated endpoint and partition metadata."
+}

core/regions/src/main/resources/software/amazon/awssdk/regions/internal/region/endpoints.json

@@ -13817,6 +13817,12 @@
               "tags" : [ "dualstack" ]
             } ]
           },
+          "ap-southeast-4" : {
+            "variants" : [ {
+              "hostname" : "servicediscovery.ap-southeast-4.amazonaws.com",
+              "tags" : [ "dualstack" ]
+            } ]
+          },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "servicediscovery-fips.ca-central-1.amazonaws.com",