[release] Prepare release Instrumentation.Http-1.11.0 (#2482)

Author: opentelemetrybot

src/OpenTelemetry.Instrumentation.Http/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.11.0
+
+Released 2025-Jan-27
+
 * The `http.client.request.duration` histogram (measured in seconds) produced by
   the metrics instrumentation in this package now uses the [Advice API](https://github.com/open-telemetry/opentelemetry-dotnet/blob/core-1.10.0/docs/metrics/customizing-the-sdk/README.md#explicit-bucket-histogram-aggregation)
   to set default explicit buckets following the [OpenTelemetry Specification](https://github.com/open-telemetry/semantic-conventions/blob/v1.29.0/docs/http/http-metrics.md).