fix(deps): update dependency yargs to v14 (#328)

Author: renovate-bot

dlp/package.json

@@ -18,7 +18,7 @@
     "@google-cloud/dlp": "^1.4.0",
     "@google-cloud/pubsub": "^0.29.0",
     "mime": "^2.3.1",
-    "yargs": "^13.0.0"
+    "yargs": "^14.0.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",