Have the CI build enforce the use of terser.

Author: sanason

.github/workflows/ci.yml

@@ -19,6 +19,10 @@ jobs:
         run: npm ci --timing
       - name: Lint javascript
         run: npm run lint
+      - name: Verify minification uses script
+        run: |
+          npm run minify
+          git diff --exit-code Universal-Federated-Analytics-Min.js Universal-Federated-Analytics-Min.js.map
       - name: Run tests
         # aa-exec applies Ubuntu's AppArmor profile for stable Chrome binaries to the Chrome for Testing binary downloaded by Puppeteer
         # Without it, Puppeteer fails with error "No usable sandbox!"