Update changelog for 1.40.0 release (open-telemetry#420)

otelbot[bot] · web-flow · commit 1b869bc2dc75 · 2026-02-19T22:40:46.000Z
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 1.40.0 (2026-02-19)
+
 * Bump to semconv v1.40.0
   ([#418](https://github.com/open-telemetry/semantic-conventions-java/pull/418))
 
