Create a connection by the below command.
$conn = Get-CrmConnection -InteractiveMode
Fill in the credentials to log in to your Environment.
Create Organization Requests with msdynmkt_PublishJourney.
$req = [Microsoft.Xrm.Sdk.OrganizationRequest]::new("msdynmkt_PublishJourney")
Add Parameter (JourneyId) to $req.
$req.Parameters.Add("journeyId", "f07b0477-804e-ee11-be6e-6045bd0064a5")
Execute the request.
$req = $conn.Execute($req)
Final Code
$conn = Get-CrmConnection -InteractiveMode
$req = [Microsoft.Xrm.Sdk.OrganizationRequest]::new("msdynmkt_PublishJourney")
$req.Parameters.Add("journeyId", "f07b0477-804e-ee11-be6e-6045bd0064a5")
$res = $conn.Execute($req)