fix(aws-lambda, netlify): add isBase64Encoded response field

[Azcray]

🔗 Linked issue

#1274 PR
#22832 Nuxt
#852

❓ 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

I added the isBase64Encoded option to allow Lambda to understand that the request is a base64 encoded document.

I complete the PR #1274 to solve this problem.

📝 Checklist

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

[Azcray]

I tested with serverless-offline and it works great!

[codecov]

Codecov Report

Merging #1645 (7ae9766) into main (61144e5) will not change coverage.
Report is 1 commits behind head on main.
The diff coverage is n/a.

❗ Current head 7ae9766 differs from pull request most recent head 9deb910. Consider uploading reports for the commit 9deb910 to get more accurate results

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[pi0]

Thanks ❤️