chore: update package download counts (#1780)

## Summary
Automated update of package download statistics from pepy.tech

## Details
- Updates download counts in `reference/packages.yml`
- Regenerates provider overview page at
`src/oss/python/integrations/providers/overview.mdx`
- Generated by GitHub Actions workflow `update-package-downloads.yml`
- Scheduled to run every Sunday at 11:59 PM UTC

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]