[ReleasePR azure-mgmt-machinelearningservices] Update delete pe connection to long running#13606

openapi-sdkautomation[bot] wants to merge 1 commit intoAzure:release/v3Azure/azure-sdk-for-python:release/v3from

AzureSDKAutomation:sdkAutomation/azure-mgmt-machinelearningservicesAzureSDKAutomation/azure-sdk-for-python:sdkAutomation/azure-mgmt-machinelearningservicesCopy head branch name to clipboard