Prepare changelog for 1.30.0-RC release

Author: jack-berg

CHANGELOG.md

@@ -1,6 +1,17 @@
 # Changelog
 
-## Unreleased
+## Version 1.30.0-RC (TODO)
+
+**NOTICE**: This is a release candidate (RC), proceeding the first stable release of `io.opentelemetry.semconv:opentelemetry-semconv`.
+
+* **BREAKING**: Prepare for stable release. Remove deprecated `ResourceAttributes`, `SemanticAttributes`.
+  ([#130](https://github.com/open-telemetry/semantic-conventions-java/pull/130))
+* Exclude `exception.escaped` from (to-be-stable) artifact
+  ([#133](https://github.com/open-telemetry/semantic-conventions-java/pull/133))
+* Remove schema urls for `1.22.0`, `1.23.1`. 
+  ([#134](https://github.com/open-telemetry/semantic-conventions-java/pull/134))
+* Bump to semantic-conventions v1.30.0
+  ([#141](https://github.com/open-telemetry/semantic-conventions-java/pull/141))
 
 ## Version 1.29.0 (2024-12-19)
 

README.md

@@ -62,6 +62,14 @@ is the need to set the Gradle property `android.useFullClasspathForDexingTransfo
 builds. Please see [this](https://github.com/open-telemetry/opentelemetry-android/pull/309) 
 pull request on the OpenTelemetry Android Extension for details.
 
+## Compatibility
+
+Artifacts from this repository follow semantic versioning, mirroring the versions of the upstream [semantic-conventions](https://github.com/open-telemetry/semantic-conventions) repository. If a patch release is needed for logic in this repository, a release will be published with a fourth version component (i.e. `1.30.0.1` to patch an issue with `1.30.0`).  
+
+Stable artifacts (i.e. artifacts without -alpha version suffix) come with strong backwards compatibility guarantees for public APIs.
+
+Compatibility guarantees are inherited from [opentelemetry-java](https://github.com/open-telemetry/opentelemetry-java/blob/main/VERSIONING.md) .
+
 ## Generating semantic conventions
 
 Requires docker.