Update constraints again

Author: DylanRussell

e2e-test-server/constraints.txt

@@ -25,7 +25,7 @@ Jinja2==3.1.2
 MarkupSafe==2.1.3
 opentelemetry-api==1.30.0
 opentelemetry-sdk==1.30.0
-opentelemetry-semantic-conventions==0.41b0
+opentelemetry-semantic-conventions==0.51b0
 packaging==24.1
 proto-plus==1.22.3
 protobuf==4.24.4