Fix release workflow and bump to v0.0.18

Author: suhaibbinyounis

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version: 20.x
           cache: 'npm'
 
       - name: Install Dependencies

dist/extension.js

@@ -3,7 +3,7 @@
   "displayName": "GitHub Copilot API Gateway",
   "description": "Transform GitHub Copilot into a full AI platform: OpenAI-compatible API server + Enterprise Apps Hub with Playwright Generator, Code Review, Commit Messages, and more.",
   "icon": "media/icon.png",
-  "version": "0.0.17",
+  "version": "0.0.18",
   "author": {
     "name": "Suhaib Bin Younis",
     "email": "vscode@suhaib.in",