Specify package lock location

.github/workflows/build_test.yml

@@ -36,6 +36,7 @@ jobs:
  uses: actions/setup-node@v3
  with:
  node-version: '18'
+ cache-dependency-path: './src/vscode/package-lock.json'
  cache: 'npm'
  - name: Restore NPM
  run: npm install -g typescript vsce ovsx