chore: workaround for describe.skipIf not working

[pi0]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 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)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Windows CI should skip vercel-edge but it is not skipping it with describe.skipIf(isWindows)(...) only in CI. (runIf seems broken too)

Failing: https://github.com/unjs/nitro/actions/runs/4989669099/jobs/8933890560#step:8:345

/cc @antfu

📝 Checklist

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

[codecov]

Codecov Report

Merging #1240 (9d3fd02) into main (3073423) will decrease coverage by 0.30%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1240      +/-   ##
==========================================
- Coverage   77.24%   76.95%   -0.30%     
==========================================
  Files          67       67              
  Lines        6712     6712              
  Branches      688      684       -4     
==========================================
- Hits         5185     5165      -20     
- Misses       1525     1546      +21     
+ Partials        2        1       -1     

see 3 files with indirect coverage changes