fix(deps): update dependency @google-cloud/common to ^0.26.0 (#149)

Author: renovate[bot]

packages/google-cloud-translate/package.json

@@ -68,7 +68,7 @@
     "presystem-test": "npm run compile"
   },
   "dependencies": {
-    "@google-cloud/common": "^0.25.0",
+    "@google-cloud/common": "^0.26.0",
     "@google-cloud/promisify": "^0.3.0",
     "arrify": "^1.0.1",
     "extend": "^3.0.1",