Update CHANGELOG.md to include PR #3826

Author: luke6Lh43

CHANGELOG.md

@@ -18,9 +18,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#3765](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3765))
 - Add `rstcheck` to pre-commit to stop introducing invalid RST
   ([#3777](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3777))
-
 - `opentelemetry-exporter-credential-provider-gcp`: create this package which provides support for supplying your machine's Application Default Credentials (https://cloud.google.com/docs/authentication/application-default-credentials) to the OTLP Exporters created automatically by OpenTelemetry Python's auto instrumentation. These credentials authorize OTLP traces to be sent to `telemetry.googleapis.com`. 
 [#3766](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3766).
+- `opentelemetry-instrumentation-redis`: Add support for semantic convention opt-in and stable Redis span attributes ([#3826](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3826))
 
 ## Version 1.37.0/0.58b0 (2025-09-11)