Updated the environment sdk to max 4. #29

	# Note:
	# Make sure that the github pages is already set to Github Actions, otherwise the workflow will fail.
	#
	# Author: Shubham Gupta
	# - GitHub: https://github.com/shubham-gupta-16/

	name: CI
	on:
	push:
	branches:
	- master
	# pull_request:
	# branches:
	# - master

	# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
	permissions:
	contents: read
	pages: write
	id-token: write

	# Allow one concurrent deployment
	concurrency:
	group: "pages"
	cancel-in-progress: true

	jobs:
	flutter_web_deploy:
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: ./example
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Setup Flutter
	uses: subosito/flutter-action@v2
	with:
	channel: 'stable'
	- run: flutter pub get
	- run: flutter build web --base-href /${{ github.event.repository.name }}/
	- name: Upload artifact
	uses: actions/upload-pages-artifact@v1
	with:
	path: example/build/web
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v2

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