feat(playintegrity): update the API

#### playintegrity:v1

The following keys were added:
- schemas.RequestDetails.properties.requestHash.description
- schemas.RequestDetails.properties.requestHash.type

The following keys were changed:
- schemas.RequestDetails.properties.nonce.description

discovery/playintegrity-v1.json

@@ -138,7 +138,7 @@
       }
     }
   },
-  "revision": "20221214",
+  "revision": "20230131",
   "rootUrl": "https://playintegrity.googleapis.com/",
   "schemas": {
     "AccountActivity": {
@@ -289,7 +289,11 @@
       "id": "RequestDetails",
       "properties": {
         "nonce": {
-          "description": "Required. Nonce that was provided in the request (which is base64 web-safe no-wrap).",
+          "description": "Nonce that was provided in the request (which is base64 web-safe no-wrap).",
+          "type": "string"
+        },
+        "requestHash": {
+          "description": "Request hash that was provided in the request.",
           "type": "string"
         },
         "requestPackageName": {

src/apis/playintegrity/v1.ts

@@ -199,9 +199,13 @@ export namespace playintegrity_v1 {
    */
   export interface Schema$RequestDetails {
     /**
-     * Required. Nonce that was provided in the request (which is base64 web-safe no-wrap).
+     * Nonce that was provided in the request (which is base64 web-safe no-wrap).
      */
     nonce?: string | null;
+    /**
+     * Request hash that was provided in the request.
+     */
+    requestHash?: string | null;
     /**
      * Required. Application package name this attestation was requested for. Note: This field makes no guarantees or promises on the caller integrity. For details on application integrity, check application_integrity.
      */