add api-report run to yarn build

Author: hsubox76

packages/telemetry/package.json

@@ -27,7 +27,7 @@
   "scripts": {
     "lint": "eslint -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",
     "lint:fix": "eslint --fix -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",
-    "build": "rollup -c",
+    "build": "rollup -c && yarn api-report",
     "build:deps": "lerna run --scope @firebase/telemetry --include-dependencies build",
     "dev": "rollup -c -w",
     "test": "run-p --npm-path npm lint test:all",