fix(parseURL): parse protocol case-insensitively

[danielroe]

🔗 Linked issue

#180
nuxt/nuxt#24288

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 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

This applies fix on case sensitivity to parseURL

📝 Checklist

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (92b63c2) 95.11% compared to head (c6ebedc) 95.11%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #188   +/-   ##
=======================================
  Coverage   95.11%   95.11%           
=======================================
  Files           7        7           
  Lines         840      840           
  Branches      180      180           
=======================================
  Hits          799      799           
  Misses         41       41           

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