chore(main): release 4.0.1 (#717)

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md
Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: bencoe@google.com <bencoe@google.com>

dlp/package.json

@@ -15,7 +15,7 @@
     "test": "mocha system-test/*.test.js --timeout=600000"
   },
   "dependencies": {
-    "@google-cloud/dlp": "^4.0.0",
+    "@google-cloud/dlp": "^4.0.1",
     "@google-cloud/pubsub": "^3.0.0",
     "mime": "^3.0.0",
     "yargs": "^16.0.0"