Update checkout version to v4 #10

	name: Snyk Security Scan
	on: "push"
	# schedule:
	# - cron: "15 * * * *"
	# jobs:
	# frontend-scan:
	# name: frontend scan
	# runs-on: ubuntu-latest
	# steps:
	# - uses: actions/checkout@master
	# - run: cd frontend
	# - name: Run Snyk to check for vulnerabilities
	# uses: snyk/actions/node@master
	# env:
	# SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
	# backend-scan:
	# name: backend scan
	# runs-on: ubuntu-latest
	# steps:
	# - uses: actions/checkout@master
	# - run: cd backend
	# - name: Run Snyk to check for vulnerabilities
	# uses: snyk/actions/python@master
	# env:
	# SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
	jobs:
	security-scan:
	name: security scan
	runs-on: ubuntu-latest
	steps:
	- name: Checkout Repository
	uses: actions/checkout@v4
	- name: Run Snyk to check for vulnerabilities
	uses: snyk/actions/node@master
	env:
	SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}

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