chore(deps): bump io.opentelemetry.semconv:opentelemetry-semconv-incubating

Bumps [io.opentelemetry.semconv:opentelemetry-semconv-incubating](https://github.com/open-telemetry/semantic-conventions-java) from 1.39.0-alpha to 1.40.0-alpha.
- [Release notes](https://github.com/open-telemetry/semantic-conventions-java/releases)
- [Changelog](https://github.com/open-telemetry/semantic-conventions-java/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-telemetry/semantic-conventions-java/commits)

---
updated-dependencies:
- dependency-name: io.opentelemetry.semconv:opentelemetry-semconv-incubating
  dependency-version: 1.40.0-alpha
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

agentscope-dependencies-bom/pom.xml

@@ -93,7 +93,7 @@
         <socket.io-client.version>2.1.2</socket.io-client.version>
         <mysql.version>9.6.0</mysql.version>
         <opentelemetry-reactor.version>2.24.0-alpha</opentelemetry-reactor.version>
-        <opentelemetry-semconv-incubating.version>1.39.0-alpha</opentelemetry-semconv-incubating.version>
+        <opentelemetry-semconv-incubating.version>1.40.0-alpha</opentelemetry-semconv-incubating.version>
         <redisson.version>4.2.0</redisson.version>
         <a2a-client.version>0.3.3.Final</a2a-client.version>
         <a2a-server-common.version>0.3.3.Final</a2a-server-common.version>