Update extensions/vscode/README.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Nathan Randall <70299490+data-douser@users.noreply.github.com>

Author: data-douser

extensions/vscode/README.md

@@ -4,7 +4,7 @@ A VS Code extension that automatically installs, configures, and manages the [Co
 
 ## Prerequisites
 
-- **VS Code** `^1.109.0`
+- **VS Code** `^1.115.0`
 - **Node.js** `>=25.6.0`
 - **[CodeQL for VS Code](https://marketplace.visualstudio.com/items?itemName=GitHub.vscode-codeql)** — declared as an `extensionDependency` and must be installed first.