fix: update file upload access level to public in index.js #4

	name: Test Action

	on: [push]

	jobs:
	test-action:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Create test file
	run: \|
	mkdir -p test-files
	echo "Test file created at $(date)" > test-files/test-upload.txt
	echo "GitHub SHA: ${{ github.sha }}" >> test-files/test-upload.txt
	echo "Workflow run: ${{ github.run_number }}" >> test-files/test-upload.txt
	cat test-files/test-upload.txt

	- name: Test Upload to Vercel Blob
	id: upload
	uses: ./
	with:
	source: "test-files/test-upload.txt"
	destination: "github-actions-test/test-${{ github.run_number }}-${{ github.sha }}.txt"
	read-write-token: ${{ secrets.BLOB_READ_WRITE_TOKEN }}

	- name: Verify upload result
	run: \|
	echo "✅ File uploaded successfully!"
	echo "📁 Blob URL: ${{ steps.upload.outputs.url }}"

	# Verify the URL is valid
	if [[ "${{ steps.upload.outputs.url }}" =~ ^https:// ]]; then
	echo "✅ URL format is valid"
	else
	echo "❌ URL format is invalid"
	exit 1
	fi

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