message: tech-insights-backend: update FactRetrieverEngine tests to work with Jest 27
diff: @@ -28,7 +28,7 @@ import { TestDatabaseId, TestDatabases } from '@backstage/backend-test-utils';
  import { TaskScheduler } from '@backstage/backend-tasks';
  import waitForExpect from 'wait-for-expect';
  -jest.useFakeTimers();
  +jest.useFakeTimers('legacy');
  const testFactRetriever: FactRetriever = {
  id: 'test_factretriever',
  @@ -145,7 +145,7 @@ describe('FactRetrieverEngine', () => {
  }
  it.each(databases.eachSupportedId())(
  - 'Should update fact retriever schemas on initialization',
  + 'Should update fact retriever schemas on initialization with %s',
  async databaseId => {
  const schemaAssertionCallback = jest.fn((def: FactSchemaDefinition) => {
  expect(def.id).toEqual('test_factretriever');
  @@ -170,7 +170,7 @@ describe('FactRetrieverEngine', () => {
  );
  it.each(databases.eachSupportedId())(
  - 'Should insert facts when scheduled step is run',
  + 'Should insert facts when scheduled step is run with %s',
  async databaseId => {
  function insertCallback({
  facts,
  