Allow openai 0.4, update lock to use it

Author: tconley1428

pyproject.toml

@@ -28,7 +28,7 @@ grpc = ["grpcio>=1.48.2,<2"]
 opentelemetry = ["opentelemetry-api>=1.11.1,<2", "opentelemetry-sdk>=1.11.1,<2"]
 pydantic = ["pydantic>=2.0.0,<3"]
 openai-agents = [
-  "openai-agents>=0.3,<0.4",
+  "openai-agents>=0.3,<0.5",
   "mcp>=1.9.4, <2",
 ]
 
@@ -58,7 +58,7 @@ dev = [
   "pytest-cov>=6.1.1",
   "httpx>=0.28.1",
   "pytest-pretty>=1.3.0",
-  "openai-agents>=0.3,<0.4; python_version >= '3.14'",
+  "openai-agents>=0.3,<0.5; python_version >= '3.14'",
   "openai-agents[litellm]>=0.3,<0.4; python_version < '3.14'",
   "googleapis-common-protos==1.70.0",
 ]