Update changelog for 1.34.0 release (#240)

otelbot[bot] · web-flow · commit 278329ad5f43 · 2025-06-10T16:26:40.000Z
Co-authored-by: otelbot &lt;197425009+otelbot@users.noreply.github.com&gt;
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+## Version 1.34.0 (2025-06-10)
+
 Note: there was no v1.33.0 release
 (see [details](https://github.com/open-telemetry/semantic-conventions-java/pull/217#discussion_r2109393759)).
 
