That was released in August 2022. You can download older VS Code versions from the official archives:
Are you looking to download this specific version for a or for compatibility with a specific extension? October 2022 (version 1.73) - Visual Studio Code visual studio code 1703 download top
If you’re running Windows 10 on an older machine or a Linux system with limited RAM, newer Electron runtimes (which power VS Code) can be heavier. Version 1.70.3 uses Electron 19.x, which is notably lighter than modern Electron 25+. That was released in August 2022