Update changelog

Author: DylanRussell

instrumentation-genai/opentelemetry-instrumentation-vertexai/CHANGELOG.md

@@ -14,8 +14,10 @@ users will need to set the environment variable OTEL_SEMCONV_STABILITY_OPT_IN to
   ([#3328](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3328))
 - VertexAI support for async calling
   ([#3386](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3386))
-  - `opentelemetry-instrumentation-vertexai`: migrate off the deprecated events API to use the logs API
+  - Migrate off the deprecated events API to use the logs API
   ([#3625](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3626))
+  - Update `gen_ai_latest_experimental` instrumentation to record files being passed to the model
+  ([#3840](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3840)).
 
 ## Version 2.0b0 (2025-02-24)