chore: release 1.8.0 (#125)

🤖 I have created a release \*beep\* \*boop\* 
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## [1.8.0](https://www.github.com/googleapis/nodejs-datacatalog/compare/v1.7.0...v1.8.0) (2020-03-06)


### Features

* deferred client initialization ([#127](https://www.github.com/googleapis/nodejs-datacatalog/issues/127)) ([1640d4d](https://www.github.com/googleapis/nodejs-datacatalog/commit/1640d4d8fe1a9adbff9719399e5e2fff95bbb4b5))
* export protos in src/index.ts ([86933a1](https://www.github.com/googleapis/nodejs-datacatalog/commit/86933a113549c33a5283e7bf438ce0229b74155b))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please).

Author: release-please[bot]

datacatalog/snippets/package.json

@@ -15,7 +15,7 @@
     "test": "mocha --timeout 600000"
   },
   "dependencies": {
-    "@google-cloud/datacatalog": "^1.7.0"
+    "@google-cloud/datacatalog": "^1.8.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",