Update from upstream #156

	name: Update from upstream
	on:
	schedule: [cron: '12 4 * * *']
	workflow_dispatch:
	jobs:
	Fetch-Files:
	runs-on: ubuntu-latest
	steps:
	- name: Install required packages
	run: sudo apt install libxml2-utils pandoc
	- uses: actions/checkout@v3
	- name: Prepare Git environment
	run: \|
	git config --global user.name "Benjamin Somers"
	git config --global user.email benjamin.somers@imt-atlantique.fr
	- name: Fetch last LICENSE
	run: curl https://capec.mitre.org/about/termsofuse.html \| xmllint --html -xpath "//*[preceding-sibling::comment()[1][contains(., 'begin Main Content')]][following-sibling::comment()[1][contains(., 'end Main Content')]]" - \| pandoc --from=html --to=gfm-raw_html > LICENSE.md
	- name: Commit new LICENSE
	run: \|
	git add LICENSE.md
	if git commit -m "Update LICENSE"
	then
	git push origin latest
	else
	echo "Nothing to do"
	fi
	- name: Fetch last CAPEC files
	run: \|
	curl -o files.zip https://capec.mitre.org/data/archive/capec_latest.zip
	unzip -d tmp files.zip
	for file in tmp/*.xml
	do
	mv "$file" data.xml
	done
	for file in tmp/*.xsd
	do
	mv "$file" schema.xsd
	done
	rm files.zip
	rmdir tmp
	- name: Commit new files
	run: \|
	DATA_VERSION=$(xmllint -xpath "string(/*/@Version)" data.xml)
	SCHEMA_VERSION=$(xmllint -xpath "string(/*/@version)" schema.xsd)
	VERSION="Version $DATA_VERSION (schema $SCHEMA_VERSION)"
	git add data.xml schema.xsd
	if git commit -m "Automatic update: $VERSION"
	then
	TAG="$DATA_VERSION+$SCHEMA_VERSION"
	git tag -a "$TAG" -m "$VERSION"
	git push --atomic origin latest "$TAG"
	else
	echo "Nothing to do"
	fi

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