perf(sanity): reduce initial bulk job wait from 15s to 5s

- Reduces test suite execution time by 10 seconds
- Route is now stable, no need for long initial wait

Author: AniketDev7

test/sanity-check/api/bulkOperation-test.js

@@ -356,7 +356,7 @@ describe('BulkOperation api test', () => {
   })
 
   it('should wait for all jobs to be processed before checking status', async () => {
-    await delay(15000)
+    await delay(5000)
   })
 
   it('should wait for jobs to be ready and get job status for the first publish job', async function () {