Update actions/checkout to v4 #27

	name: deploy blog

	on:
	push:
	branches:
	- master
	tags-ignore:
	- 'v*'

	jobs:
	deploy:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Setup Node
	uses: actions/setup-node@v4
	with:
	node-version: 20
	cache: yarn
	- name: Build blog
	run: make build-blog
	- name: Configure Git user
	run: \|
	git config --local user.email "github-actions[bot]@users.noreply.github.com"
	git config --local user.name "github-actions[bot]"
	- name: Fetch and checkout gh-pages
	run: \|
	git fetch origin gh-pages --depth=1
	git checkout gh-pages
	- name: Copy published site into folder
	run: mv blog blog2 && cp -TRv blog2/.vitepress/dist/ blog/
	- name: Add blog files to git index
	run: git add blog
	- name: Committing
	run: git commit -m 'Deployed blog from ${{ github.sha }}'
	- name: Push
	run: git push

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