Powershell plugin with pswh cannot read Korean in script.

I modified plugin config like below for using powershell 7.

```

<?xml version='1.1' encoding='UTF-8'?>
<hudson.plugins.powershell.PowerShellInstallation_-DescriptorImpl plugin="powershell@1.7">
  <installations class="hudson.plugins.powershell.PowerShellInstallation-array">
    <hudson.plugins.powershell.PowerShellInstallation>
      <name>DefaultWindows</name>
      <home>pwsh.exe</home>
      <properties/>
    </hudson.plugins.powershell.PowerShellInstallation>
    <hudson.plugins.powershell.PowerShellInstallation>
      <name>DefaultLinux</name>
      <home>pwsh</home>
      <properties/>
    </hudson.plugins.powershell.PowerShellInstallation>
  </installations>
</hudson.plugins.powershell.PowerShellInstallation_-DescriptorImpl>

```

This is my test powershell script.

```powershell

$PSVersionTable

Write-Host '안녕하세요'

```

When I execute it on cmd, it prints Korean well.

But in Jenkins Powershell Plugin, it is changed into ????.

please give your warm advice.