Wrong .NET prerequisite is listed in the Marketplace

[IntegerMan]

Describe the bug

I'm writing up installation pre-reqs for Polyglot Notebooks and noticed that https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.dotnet-interactive-vscode lists .NET 7 as the required version of .NET. I know from recent installation experience that .NET 8 is currently required. The extension documentation should be updated to reflect this.

Additionally, it might be wise to state a policy for when the extension will move from .NET version to .NET version as I do not know of any update cadence to quote to people beyond "check the extension for installation pre-requisites", but as the issue mentions, that's out of date.

Please complete the following:

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):

• OS
  • Windows 11
  • Windows 10
  • macOS
  • Linux (Please specify distro)
  • iOS
  • Android
• Browser
  • Chrome
  • Edge
  • Firefox
  • Safari
• Frontend
  • Jupyter Notebook
  • Jupyter Lab
  • nteract
  • Visual Studio Code
  • Visual Studio Code Insiders
  • Visual Studio
  • Other (please specify)

Screenshots

See https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.dotnet-interactive-vscode