fix typings for chatter and metadata for finally

types/jsforce/api/chatter.d.ts

@@ -41,6 +41,8 @@ export class Request<T> implements Promise<T> {
     then<TResult1, TResult2>(onfulfilled?: ((value: T) => (PromiseLike<TResult1> | TResult1)) | null | undefined,
                              onrejected?: ((reason: any) => (PromiseLike<TResult2> | TResult2)) | null | undefined): Promise<TResult1 | TResult2>;
 
+    finally(onfinally?: () => void): Promise<T>
+    
     thenCall(callback?: (err: Error, records: T) => void): Query<T>;
 
     readonly [Symbol.toStringTag]: 'Promise';

types/jsforce/api/metadata.d.ts

@@ -124,6 +124,8 @@ export class AsyncResultLocator<T> extends EventEmitter implements Promise<T> {
     then<TResult1, TResult2>(onfulfilled?: ((value: T) => (PromiseLike<TResult1> | TResult1)) | null | undefined,
                              onrejected?: ((reason: any) => (PromiseLike<TResult2> | TResult2)) | null | undefined): Promise<TResult1 | TResult2>;
 
+    finally(onfinally?: () => void): Promise<T>
+    
     readonly [Symbol.toStringTag]: "Promise";
 }