chore: release 3.0.6 (#564)

🤖 I have created a release \*beep\* \*boop\* 
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### [3.0.6](https://www.github.com/googleapis/nodejs-dlp/compare/v3.0.5...v3.0.6) (2020-11-25)


### Bug Fixes

* **window:** check for fetch on window ([8d9d49f](https://www.github.com/googleapis/nodejs-dlp/commit/8d9d49f9d9fbfec291ca0c3cf1bef64870cc8e3d))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please).

dlp/package.json

@@ -15,7 +15,7 @@
     "test": "mocha system-test/*.test.js --timeout=600000"
   },
   "dependencies": {
-    "@google-cloud/dlp": "^3.0.5",
+    "@google-cloud/dlp": "^3.0.6",
     "@google-cloud/pubsub": "^2.0.0",
     "mime": "^2.3.1",
     "yargs": "^16.0.0"