Upgrade repo tools and regenerate READMEs. (#384)

Author: jmdobry

packages/google-privacy-dlp/samples/package.json

@@ -28,7 +28,7 @@
     "yargs": "7.1.0"
   },
   "devDependencies": {
-    "@google-cloud/nodejs-repo-tools": "1.4.7",
+    "@google-cloud/nodejs-repo-tools": "1.4.13",
     "ava": "0.19.1"
   },
   "cloud-repo-tools": {