add action to run cargo update #5

	on: [pull_request]
	name: "Update Cargo.lock"
	# required for dependabot to be able to commit changes
	permissions:
	contents: write
	jobs:
	update-cargo-lock:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	token: ${{ secrets.REPO_TOKEN }}
	ref: ${{ github.event.pull_request.head.ref }}
	fetch-depth: 2
	- name: Check if Cargo.toml changed
	id: changed-files-yaml
	uses: tj-actions/changed-files@v45
	with:
	files_yaml: \|
	package:
	Cargo.toml
	- name: Rebuild
	if: steps.changed-files-yaml.outputs.package_any_changed == 'true'
	run: \|
	rm Cargo.lock
	cargo build
	- name: Commit changes
	uses: EndBug/add-and-commit@v9
	with:
	add: "."
	message: "update Cargo.lock"
	push: true

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