Increase timeout for skeleton wizard tests

We've now added more tests and pushed the total duration over 5 seconds
for all the tests in this file.

This limitation seems to be a recent development where files with tests
that last longer than 5 seconds start failing in jest.

We're bumping the timeout limit to 40 seconds for now.

Author: elenatanasoiu

extensions/ql-vscode/test/vscode-tests/cli-integration/skeleton-query-wizard.test.ts

@@ -16,6 +16,8 @@ import { testCredentialsWithStub } from "../../factories/authentication";
 import { DatabaseItem, DatabaseManager } from "../../../src/local-databases";
 import * as databaseFetcher from "../../../src/databaseFetcher";
 
+jest.setTimeout(40_000);
+
 describe("SkeletonQueryWizard", () => {
   let wizard: SkeletonQueryWizard;
   let dir: tmp.DirResult;