feat(dns)!: update the API

BREAKING CHANGE: This release has breaking changes.

#### dns:v1beta2

The following keys were deleted:
- schemas.RRSetRoutingPolicyGeoPolicy.properties.failovers.description
- schemas.RRSetRoutingPolicyGeoPolicy.properties.failovers.items.$ref
- schemas.RRSetRoutingPolicyGeoPolicy.properties.failovers.type

discovery/dns-v1beta2.json

@@ -1730,7 +1730,7 @@
       }
     }
   },
-  "revision": "20210823",
+  "revision": "20211006",
   "rootUrl": "https://dns.googleapis.com/",
   "schemas": {
     "Change": {
@@ -2721,13 +2721,6 @@
     "RRSetRoutingPolicyGeoPolicy": {
       "id": "RRSetRoutingPolicyGeoPolicy",
       "properties": {
-        "failovers": {
-          "description": "If the health check for the primary target for a geo location returns an unhealthy status, the failover target is returned instead. This failover configuration is not mandatory. If a failover is not provided, the primary target won't be healthchecked, and it returns the primarily configured rrdata irrespective of whether it is healthy or not.",
-          "items": {
-            "$ref": "RRSetRoutingPolicyGeoPolicyGeoPolicyItem"
-          },
-          "type": "array"
-        },
         "items": {
           "description": "The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.",
           "items": {

src/apis/dns/v1beta2.ts

@@ -894,10 +894,6 @@ export namespace dns_v1beta2 {
     wrrPolicy?: Schema$RRSetRoutingPolicyWrrPolicy;
   }
   export interface Schema$RRSetRoutingPolicyGeoPolicy {
-    /**
-     * If the health check for the primary target for a geo location returns an unhealthy status, the failover target is returned instead. This failover configuration is not mandatory. If a failover is not provided, the primary target won't be healthchecked, and it returns the primarily configured rrdata irrespective of whether it is healthy or not.
-     */
-    failovers?: Schema$RRSetRoutingPolicyGeoPolicyGeoPolicyItem[];
     /**
      * The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
      */