fix: use correct flag when getting pnpm workspace args

[DamianGlowala]

🔗 Linked issue

resolves https://github.com/unjs/nypm/issues/123

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• [x] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality like performance)
• [ ] ✨ New feature (a non-breaking change that adds functionality)
• [ ] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Uses correct flag when getting pnpm workspace args (-F/--filter).

📝 Checklist

• [x] I have linked an issue or discussion.
• [ ] I have updated the documentation accordingly.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 72.66%. Comparing base (660392f) to head (d9a3b23). Report is 23 commits behind head on main.

:exclamation: Current head d9a3b23 differs from pull request most recent head 7ac18e0

Please upload reports for the commit 7ac18e0 to get more accurate results.

:exclamation: There is a different number of reports uploaded between BASE (660392f) and HEAD (d9a3b23). Click for more details.

HEAD has 1 upload less than BASE

| Flag | BASE (660392f) | HEAD (d9a3b23) | |------|------|------| ||3|2|

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #130 +/- ## ========================================== - Coverage 82.17% 72.66% -9.51% ========================================== Files 6 6 Lines 516 633 +117 Branches 71 83 +12 ========================================== + Hits 424 460 +36 - Misses 91 170 +79 - Partials 1 3 +2 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[pi0]

Thanks!