feat(all): auto-regenerate discovery clients (#2209)

Author: yoshi-automation

api-list.json

@@ -2447,6 +2447,21 @@
         "x32": "https://www.gstatic.com/images/branding/product/1x/googleg_32dp.png"
       },
       "documentationLink": "https://developers.google.com/display-video/",
+      "preferred": false
+    },
+    {
+      "kind": "discovery#directoryItem",
+      "id": "displayvideo:v3",
+      "name": "displayvideo",
+      "version": "v3",
+      "title": "Display & Video 360 API",
+      "description": "Display & Video 360 API allows users to automate complex Display & Video 360 workflows, such as creating insertion orders and setting targeting options for individual line items.",
+      "discoveryRestUrl": "https://displayvideo.googleapis.com/$discovery/rest?version=v3",
+      "icons": {
+        "x16": "https://www.gstatic.com/images/branding/product/1x/googleg_16dp.png",
+        "x32": "https://www.gstatic.com/images/branding/product/1x/googleg_32dp.png"
+      },
+      "documentationLink": "https://developers.google.com/display-video/",
       "preferred": true
     },
     {