chore(docs): update Files Service documentation (#2099)

Author: bot-targa

docs/runtime_suite/files-service/changelog.md

@@ -15,6 +15,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## 2.10.3 - 2025-04-17
+
+### Added
+
+- The caster file now supports the filename field, allowing users to specify a custom name for the uploaded file. This behavior is enabled in the single file upload operation.
+
 ## 2.10.2 - 2024-12-09
 
 ### Added