samples: fix compute test, update dependency to V3 (#634)

* samples: fix compute test, update dependency to V3

Author: sofisl

asset/snippets/package.json

@@ -17,7 +17,7 @@
   "dependencies": {
     "@google-cloud/asset": "^3.23.1",
     "@google-cloud/bigquery": "^6.0.0",
-    "@google-cloud/compute": "^2.0.0",
+    "@google-cloud/compute": "^3.0.0",
     "@google-cloud/storage": "^6.0.0",
     "uuid": "^8.0.0",
     "yargs": "^16.0.0"