Updated Changelog to include fix from StorageWriteStream disposables PR (#48295)

Author: amnguye

sdk/storage/Azure.Storage.Common/CHANGELOG.md

@@ -8,6 +8,7 @@
 
 ### Bugs Fixed
 - Fixed bug where in rare cases, a `NullReferenceException` could be thrown when parsing an error response from the service.
+- Fixed bug to ensure that the accumulated disposables within the internal `StorageWriteStream` are disposed properly in the event that an exception is thrown during the disposal process. (#47781)
 
 ### Other Changes