fix: pin opentelemtry version (llamastack#2722)

# What does this PR do?

Otherwise we can get old versions like 1.11 and experience this error:

```
ModuleNotFoundError: No module named 'opentelemetry.exporter.otlp.proto.http.metric_exporter'
```

Signed-off-by: Sébastien Han <[email protected]>

Author: leseb

pyproject.toml

@@ -42,8 +42,8 @@ dependencies = [
     "h11>=0.16.0",
     "python-multipart>=0.0.20",               # For fastapi Form
     "uvicorn>=0.34.0",                        # server
-    "opentelemetry-sdk",                      # server
-    "opentelemetry-exporter-otlp-proto-http", # server
+    "opentelemetry-sdk>=1.30.0",              # server
+    "opentelemetry-exporter-otlp-proto-http>=1.30.0", # server
     "aiosqlite>=0.21.0",                      # server - for metadata store
     "asyncpg",                                # for metadata store
 ]