fix(actor): add missing 'pricingInfos' field to Actor object (#683)

The object should be identical as the one in the run:

https://docs.apify.com/api/v2/act-get
vs
https://docs.apify.com/api/v2/act-run-get

Author: metalwarrior665

src/resource_clients/actor.ts

@@ -271,6 +271,7 @@ export interface Actor {
     modifiedAt: Date;
     stats: ActorStats;
     versions: ActorVersion[];
+    pricingInfos?: ActorRunPricingInfo[];
     defaultRunOptions: ActorDefaultRunOptions;
     exampleRunInput?: ActorExampleRunInput;
     isDeprecated?: boolean;