CHANGELOG: fix stale action entry (#4291)

Author: xrmx

CHANGELOG.md

@@ -11,9 +11,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-- Add stale PR GitHub Action
-  ([#4220](https://github.com/open-telemetry/opentelemetry-python/pull/4220))
-
 ### Added
 
 - Add Python 3.14 support
@@ -62,6 +59,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#4139](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4139))
 - `opentelemetry-instrumentation-logging`: Move there the SDK LoggingHandler
   ([#4210](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4210))
+- Add stale PR GitHub Action
+  ([#4220](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4220))
 
 ### Fixed