parse-errormsgs-in-retryable-cases: add change in change log for the relevant issue

Author: Preeti Dewani

CHANGELOG.md

@@ -20,6 +20,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ### Changed
 
+- `client.UploadMetrics` in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp` now returns error shared by collector instead of generic retry-able failure error for retry-able applicable code. (#5536) 
 - `Tracer.Start` in `go.opentelemetry.io/otel/trace/noop` no longer allocates a span for empty span context. (#5457)
 - Upgrade `go.opentelemetry.io/otel/semconv/v1.25.0` to `go.opentelemetry.io/otel/semconv/v1.26.0` in `go.opentelemetry.io/otel/example/otel-collector`. (#5490)
 - Upgrade `go.opentelemetry.io/otel/semconv/v1.25.0` to `go.opentelemetry.io/otel/semconv/v1.26.0` in `go.opentelemetry.io/otel/example/zipkin`. (#5490)