chore(deps): update dependency @types/uuid to v8 (#781)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@types/uuid](https://togithub.com/DefinitelyTyped/DefinitelyTyped) | devDependencies | major | [`^7.0.0` -> `^8.0.0`](https://renovatebot.com/diffs/npm/@types%2fuuid/7.0.4/8.0.0) |

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packages/google-cloud-vision/package.json

@@ -54,7 +54,7 @@
     "@types/mocha": "^7.0.1",
     "@types/node": "^13.7.4",
     "@types/sinon": "^9.0.0",
-    "@types/uuid": "^7.0.0",
+    "@types/uuid": "^8.0.0",
     "c8": "^7.1.0",
     "codecov": "^3.6.5",
     "gts": "^2.0.0",