message: Change Windows Powershell default scheme to Campbell
  The "Campbell Powershell" color scheme does not have a high enough color contrast
  ratio. Campbell does, so we're changing it there.
  Closes (only upon validation)
diff: "name": "Windows PowerShell",
  "commandline": "powershell.exe",
  "icon": "ms-appx:///ProfileIcons/{61c54bbd-c2c6-5271-96e7-009a87ff44bf}.png",
  - "colorScheme": "Campbell Powershell",
  + "colorScheme": "Campbell",
  "antialiasingMode": "grayscale",
  "closeOnExit": "graceful",
  "cursorShape": "bar",
  