update changelog

Author: lalitb

opentelemetry-semantic-conventions/CHANGELOG.md

@@ -6,6 +6,8 @@
 
 - Update to [v1.24.0](https://github.com/open-telemetry/semantic-conventions/releases/tag/v1.24.0) of the semantic conventions.
   [#1596](https://github.com/open-telemetry/opentelemetry-rust/pull/1596)
+- Update to [v1.25.0](https://github.com/open-telemetry/semantic-conventions/releases/tag/v1.25.0) of the semantic conventions.
+  [#1681](https://github.com/open-telemetry/opentelemetry-rust/pull/1681)
 
 ## v0.14.0