[Bug]: First call to delete times out

**Checked for duplicates**

Yes

**Describe the bug**

Granule delete should return status code 504

**What did you expect?**

Granule delete should return status code 200

**Reproducible steps**

Call granule delete endpoint before cumulus lambda is "warmed up"

**What is your environment?**

Prod shared services, DS v9.4.1
