chore(deps): update opentelemetry-sdk requirement

Updates the requirements on [opentelemetry-sdk](https://github.com/open-telemetry/opentelemetry-python) to permit the latest version.
- [Release notes](https://github.com/open-telemetry/opentelemetry-python/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-python/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-python@v1.38.0...v1.41.0)

---
updated-dependencies:
- dependency-name: opentelemetry-sdk
  dependency-version: 1.41.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

python/packages/kagent-core/pyproject.toml

@@ -11,7 +11,7 @@ requires-python = ">=3.10"
 dependencies = [
   "a2a-sdk[http-server]>=0.3.23",
   "opentelemetry-api>=1.38.0,<1.39.0",
-  "opentelemetry-sdk>=1.38.0,<1.39.0",
+  "opentelemetry-sdk>=1.38.0,<1.42.0",
   "opentelemetry-exporter-otlp-proto-grpc>=1.38.0,<1.39.0",
   "opentelemetry-instrumentation-openai>=0.52.5",
   "opentelemetry-instrumentation-anthropic>=0.52.5",