Per the deprecation note

Language Server (pony-lsp)
The pony-lsp language server source code has been merged into the main Pony compiler repository:

Repository: ponylang/ponyc
Distribution: The language server is now released and distributed together with ponyc
Installation: Install ponyc via your preferred package manager to get the pony-lsp binary
VS Code Extension
The Pony Visual Studio Code extension has been moved to its own dedicated repository:

Repository: ponylang/vscode-extension
For Users
If you're currently using the Pony Language Server or Visual Studio Code extension:

pony-lsp: Install the latest version of ponyc to get the pony-lsp binary
VS Code extension: Get the newest extension from ponylang/vscode-extension.

So if we want to point to the Pony LSP, it's here