Add CODEOWNERS for additional infrastructure files (#389)

Author: Jon Burchel

.github/CODEOWNERS

@@ -13,10 +13,12 @@
 /samples/microsoft/infrastructure-setup-terraform/00-basic/code/providers.tf @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/infrastructure-setup-terraform/00-basic/code/variables.tf @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/infrastructure-setup/01-connections/connection-key-vault.bicep @azure-ai-foundry/AI-Platform-Docs
+/samples/microsoft/infrastructure-setup/05-custom-policy-definitions/deny-disallowed-connections.json @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/java/mslearn-resources/quickstart/src/main/java/com/azure/ai/foundry/samples/AgentSample.java @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/java/mslearn-resources/quickstart/src/main/java/com/azure/ai/foundry/samples/ChatCompletionSample.java @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/java/mslearn-resources/quickstart/src/main/java/com/azure/ai/foundry/samples/FileSearchAgentSample.java @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/python/mslearn-resources/quickstart/create_project.py @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/python/mslearn-resources/quickstart/quickstart.py @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/typescript/mslearn-resources/quickstart/.env.template @azure-ai-foundry/AI-Platform-Docs
 /samples/microsoft/typescript/mslearn-resources/quickstart/src/quickstart.ts @azure-ai-foundry/AI-Platform-Docs
+