feat(dialogflow): update the api

#### dialogflow:v2

The following keys were added:
- schemas.GoogleCloudDialogflowV2beta1KnowledgeOperationMetadata.properties.knowledgeBase.type (Total Keys: 1)

#### dialogflow:v2beta1

The following keys were added:
- schemas.GoogleCloudDialogflowV2beta1KnowledgeOperationMetadata.properties.knowledgeBase.type (Total Keys: 1)

#### dialogflow:v3

The following keys were added:
- schemas.GoogleCloudDialogflowV2beta1KnowledgeOperationMetadata.properties.knowledgeBase.type (Total Keys: 1)

#### dialogflow:v3beta1

The following keys were added:
- schemas.GoogleCloudDialogflowV2beta1KnowledgeOperationMetadata.properties.knowledgeBase.type (Total Keys: 1)

Author: yoshi-automation

googleapiclient/discovery_cache/documents/dialogflow.v2.json

@@ -6983,7 +6983,7 @@
       }
     }
   },
-  "revision": "20211207",
+  "revision": "20211216",
   "rootUrl": "https://dialogflow.googleapis.com/",
   "schemas": {
     "GoogleCloudDialogflowCxV3AudioInput": {
@@ -15756,6 +15756,10 @@
       "description": "Metadata in google::longrunning::Operation for Knowledge operations.",
       "id": "GoogleCloudDialogflowV2beta1KnowledgeOperationMetadata",
       "properties": {
+        "knowledgeBase": {
+          "description": "The name of the knowledge base interacted with during the operation.",
+          "type": "string"
+        },
         "state": {
           "description": "Required. Output only. The current state of this operation.",
           "enum": [

googleapiclient/discovery_cache/documents/dialogflow.v2beta1.json

@@ -7315,7 +7315,7 @@
       }
     }
   },
-  "revision": "20211207",
+  "revision": "20211216",
   "rootUrl": "https://dialogflow.googleapis.com/",
   "schemas": {
     "GoogleCloudDialogflowCxV3AudioInput": {
@@ -15518,6 +15518,10 @@
       "description": "Metadata in google::longrunning::Operation for Knowledge operations.",
       "id": "GoogleCloudDialogflowV2beta1KnowledgeOperationMetadata",
       "properties": {
+        "knowledgeBase": {
+          "description": "The name of the knowledge base interacted with during the operation.",
+          "type": "string"
+        },
         "state": {
           "description": "Required. Output only. The current state of this operation.",
           "enum": [

googleapiclient/discovery_cache/documents/dialogflow.v3.json

@@ -3820,7 +3820,7 @@
       }
     }
   },
-  "revision": "20211207",
+  "revision": "20211216",
   "rootUrl": "https://dialogflow.googleapis.com/",
   "schemas": {
     "GoogleCloudDialogflowCxV3AdvancedSettings": {
@@ -12787,6 +12787,10 @@
       "description": "Metadata in google::longrunning::Operation for Knowledge operations.",
       "id": "GoogleCloudDialogflowV2beta1KnowledgeOperationMetadata",
       "properties": {
+        "knowledgeBase": {
+          "description": "The name of the knowledge base interacted with during the operation.",
+          "type": "string"
+        },
         "state": {
           "description": "Required. Output only. The current state of this operation.",
           "enum": [

googleapiclient/discovery_cache/documents/dialogflow.v3beta1.json

@@ -3820,7 +3820,7 @@
       }
     }
   },
-  "revision": "20211207",
+  "revision": "20211216",
   "rootUrl": "https://dialogflow.googleapis.com/",
   "schemas": {
     "GoogleCloudDialogflowCxV3AudioInput": {
@@ -12787,6 +12787,10 @@
       "description": "Metadata in google::longrunning::Operation for Knowledge operations.",
       "id": "GoogleCloudDialogflowV2beta1KnowledgeOperationMetadata",
       "properties": {
+        "knowledgeBase": {
+          "description": "The name of the knowledge base interacted with during the operation.",
+          "type": "string"
+        },
         "state": {
           "description": "Required. Output only. The current state of this operation.",
           "enum": [