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

@@ -37982,6 +37982,11 @@
           "us-isob-east-1" : { }
         }
       },
+      "fsx" : {
+        "endpoints" : {
+          "us-isob-east-1" : { }
+        }
+      },
       "glacier" : {
         "endpoints" : {
           "fips-us-isob-east-1" : {