fix checkout action in pull_request_target #1794

	name: Pull Request Update

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	on:
	workflow_dispatch:
	pull_request_target:
	branches: [ 'main' ]
	types: [opened, synchronize, reopened, unlabeled]

	jobs:
	test:
	name: Test For Lint and Breaking Changes
	if: contains(github.event.pull_request.labels.*.name, 'safe to test')
	timeout-minutes: 5
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	ref: ${{ github.event.pull_request.head.sha }}
	- uses: bufbuild/buf-setup-action@v1
	# Run all Lint runs
	- uses: bufbuild/buf-lint-action@v1
	# Run breaking change detection against the `main` branch
	- uses: bufbuild/buf-breaking-action@v1
	with:
	against: 'https://github.com/viamrobotics/api.git#branch=main'

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