Add building addons to CI workflow

Author: kraenhansen

.github/workflows/test.yml

@@ -32,6 +32,8 @@ jobs:
         npm --version
     - name: Install dependencies
       run: npm ci
+    - name: Build addons
+      run: npm run build-addons
     - name: npm test
       if: matrix.node-version != '20.x'
       run: npm run node:test