chore(repo): use the async api of getJestProjects (#26792)

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## Current Behavior
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This repo uses `getJestProjects` rather than `getJestProjectsAsync`

## Expected Behavior
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This repo uses `getJestProjectsAsync`

## Related Issue(s)
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merged. -->

Fixes #

jest.config.ts

@@ -1,5 +1,5 @@
-import { getJestProjects } from '@nx/jest';
+import { getJestProjectsAsync } from '@nx/jest';
 
-export default {
+export default async () => ({
-  projects: getJestProjects(),
+  projects: await getJestProjectsAsync(),
-};
+});