fix(instrumentation-fetch): include correct esm version of semconv (#5878)

Author: overbalance

experimental/CHANGELOG.md

@@ -37,6 +37,7 @@ For notes on migrating to 2.x / 0.200.x see [the upgrade guide](doc/upgrade-to-2
 ### :bug: Bug Fixes
 
 * fix(otlp-exporter-base): prioritize `esnext` export condition as it is more specific [#5458](https://github.com/open-telemetry/opentelemetry-js/pull/5458)
+* fix(instrumentation-fetch): Use ESM version of semconv instead of CJS. Users expecting mixed ESM and CJS modules will now only get ESM modules. [#5878](https://github.com/open-telemetry/opentelemetry-js/pull/5878) @overbalance
 
 ### :books: Documentation
 

experimental/packages/opentelemetry-instrumentation-fetch/src/fetch.ts

@@ -35,7 +35,7 @@ import {
   ATTR_HTTP_METHOD,
   ATTR_HTTP_REQUEST_CONTENT_LENGTH_UNCOMPRESSED,
   ATTR_HTTP_REQUEST_BODY_SIZE,
-} from '../src/semconv';
+} from './semconv';
 import {
   ATTR_ERROR_TYPE,
   ATTR_HTTP_REQUEST_METHOD,