Update top-pypi-packages filename (#11959)
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
To stay within quota, it now has just under 30 days of data, so the
filename has been updated. Both will be available for a while. See
https://github.com/hugovk/top-pypi-packages/pull/46.
## Test Plan
<!-- How was it tested? -->
```sh
curl https://hugovk.github.io/top-pypi-packages/top-pypi-packages-30-days.min.json | jq -r ❯
curl https://hugovk.github.io/top-pypi-packages/top-pypi-packages.min.json | jq -r ".rows | .
diff pypi_8k_downloads_original.txt pypi_8k_downloads_new.txt
```
