Fix @vscode/vsce dependency after its rename (#4357)

Also fix the documentation to recommend Node v16, as that's what VS Code
currently uses, and v14 is too old for dependencies such as
`@vscode/test-electron`, and the badge links in the readme since the
upstream URL changed without notice.

This should fix the release process.

Author: andyleejordan

README.md

@@ -1,8 +1,8 @@
 # PowerShell for Visual Studio Code
 
 [![Build Status](https://dev.azure.com/powershell/vscode-powershell/_apis/build/status/PowerShell.vscode-powershell?branchName=main)](https://dev.azure.com/powershell/vscode-powershell/_build/latest?definitionId=51&branchName=main)
-[![Version](https://vsmarketplacebadge.apphb.com/version/ms-vscode.PowerShell.svg)](https://marketplace.visualstudio.com/items?itemName=ms-vscode.PowerShell)
-[![Installs](https://vsmarketplacebadge.apphb.com/installs-short/ms-vscode.PowerShell.svg)](https://marketplace.visualstudio.com/items?itemName=ms-vscode.PowerShell)
+[![Version](https://vsmarketplacebadges.dev/version-short/ms-vscode.powershell.svg)](https://marketplace.visualstudio.com/items?itemName=ms-vscode.PowerShell)
+[![Installs](https://vsmarketplacebadges.dev/installs-short/ms-vscode.powershell.svg)](https://marketplace.visualstudio.com/items?itemName=ms-vscode.PowerShell)
 [![Join the chat on Discord](https://img.shields.io/discord/180528040881815552.svg?label=%23vscode&logo=discord&logoColor=white)](https://aka.ms/powershell-vscode-discord)
 [![Join the chat on Gitter](https://badges.gitter.im/PowerShell/vscode-powershell.svg)](https://gitter.im/PowerShell/vscode-powershell?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 

docs/development.md

@@ -20,7 +20,7 @@ to before you can proceed.
    > using VSCode Insiders means the extension can be developed ready for new features and changes in the next VSCode
    > release.
 
-5. Install [Node.js](https://nodejs.org/en/) 10.x or higher.
+5. Install [Node.js](https://nodejs.org/en/) 16.x or higher.
 
 [fork]: https://help.github.com/articles/fork-a-repo/