For linux tests without tracing blob-report-1.zip takes 19M, while
unpacked size is 228 MB. That size is counted for GitHub artifact
billing:
<img width="434" alt="image"
src="https://github.com/microsoft/playwright/assets/9798949/5bc32511-6686-4581-a348-acb6a54cd99b">
We zip individual .jsonl reports so that they still have unique names
and can be easily uploaded into the same artifacts directory without
name collisions.