Update changelog

Author: zoewangg

.changes/2.40.14.json

@@ -25,6 +25,12 @@
             "category": "Amazon GuardDuty",
             "contributor": "",
             "description": "Make accountIds a required field in GetRemainingFreeTrialDays API to reflect service behavior."
+        },
+        {
+            "type": "bugfix",
+            "category": "Amazon S3",
+            "contributor": "",
+            "description": "Fixed the issue where S3 multipart client failed to download zero-byte file, causing `Content range header is missing` exception to throw."
         }
     ]
 }

CHANGELOG.md

@@ -16,6 +16,10 @@
   - ### Features
     - Make accountIds a required field in GetRemainingFreeTrialDays API to reflect service behavior.
 
+## __Amazon S3__
+- ### Bugfixes
+    - Fixed the issue where S3 multipart client failed to download zero-byte file, causing `Content range header is missing` exception to throw.
+
 # __2.40.13__ __2025-12-19__
 ## __ARC - Region switch__
   - ### Features