fix: use pre-release version of WSL

[ginglis13]

Issue #, if available:

Description of changes:

GitHub Actions connect to runners via session 0 / ssh. In versions of WSL installed from the Windows store (wsl --install), wsl cannot be invoked via connections over session 0. The pre-release version of WSL has patches to accommodate this, so install that version instead of the version provided by the Windows store.

related: microsoft/WSL#9231

Testing done:

Manually instance setup with minimal user data script:

version: 1.0
tasks:
- task: executeScript
  inputs:
  - frequency: once
    type: powershell
    runAs: admin
    content: |-
      wsl --install --no-distribution

      # Script runs on login after reboot to start GitHub Actions service, put the instance InService in the ASG,
      # and update wsl version to pre-release verion such that ssh / session 0 connections can call wsl
      $startupscript = @'
      Start-Transcript -Path "C:\StartupScript.log" -Append
      
      Invoke-WebRequest -Uri https://github.com/microsoft/WSL/releases/download/2.0.1/wsl.2.0.1.0.x64.msi -OutFile C:\Users\Administrator\wsl.2.0.1.0.x64.msi
      Start-Process msiexec.exe -Wait -ArgumentList '/i C:\Users\Administrator\wsl.2.0.1.0.x64.msi /L*V C:\wsllogs.txt /quiet'

      '@

      $startupscript | Out-File C:\startup.ps1

      # Register a scheduled job to run the script to regist the instance as a runner on boot.
      $trigger = New-JobTrigger -AtStartup -RandomDelay 00:00:30
      Register-ScheduledJob -Trigger $trigger -FilePath C:\startup.ps1 -Name startup-job-inservice

      Restart-Computer

Access instance via SSM Connect after reboot, verified existence of C:\Program Files\WSL, C:\Program Files\WSL\wsl.exe --version -> 2.0.1.0

• I've reviewed the guidance in CONTRIBUTING.md

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