Update node version

Signed-off-by: Rob Stryker <rob@oxbeef.net>

Author: robstryker

.github/workflows/gh-actions.yml

@@ -114,7 +114,7 @@ jobs:
       - name: Set Up NodeJS
         uses: actions/setup-node@v4
         with:
-          node-version: '18'
+          node-version: '20'
       - name: Install dependencies
         run: |
           npm install -g typescript "@vscode/vsce" "ovsx"