Made `cargo_build_script` `streams` output group optional. #3150

	name: Formatting

	on:
	push:
	branches:
	- main
	pull_request:
	types:
	- opened
	- synchronize

	jobs:
	code-format-checks:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: DoozyX/[email protected]
	with:
	source: '.'
	extensions: 'h,c,cc,proto'
	clangFormatVersion: 14
	- uses: actionsx/prettier@v2
	with:
	args: --config "${{ github.workspace }}/.prettierrc.toml" --write "*/.{js,ts}"
	# Prettier has no diff view so we must make one ourselves
	# https://github.com/prettier/prettier/issues/6885
	- run: \|
	git diff
	if [[ -n "$(git status --porcelain)" ]]; then
	exit 1
	fi

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