Update actions/checkout digest to 44c2b7a #173

	#
	# Configuration for GitHub-based CI, based on the stock GitHub Rust config.
	#
	name: Rust

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	check-style:
	runs-on: ubuntu-latest
	steps:
	# actions/checkout@v2
	- uses: actions/checkout@43045ae669be728bd34ed56fcd1a230c0dc4d8e2
	- uses: actions-rs/toolchain@88dc2356392166efad76775c878094f4e83ff746
	with:
	toolchain: stable
	default: false
	components: rustfmt
	- name: Check style
	run: cargo fmt -- --check

	check-without-cockroach:
	runs-on: ubuntu-latest
	steps:
	# actions/checkout@v2
	- uses: actions/checkout@43045ae669be728bd34ed56fcd1a230c0dc4d8e2
	- name: Cargo check
	run: cargo check --no-default-features

	build-and-test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ ubuntu-latest, macos-12 ]
	steps:
	# actions/checkout@v2
	- uses: actions/checkout@43045ae669be728bd34ed56fcd1a230c0dc4d8e2
	- name: Download CockroachDB
	run: ./tools/ci_download_cockroachdb
	- name: Add CockroachDB to PATH
	run: echo ./out/cockroachdb/bin >> $GITHUB_PATH
	- name: Build
	run: cargo build --tests --verbose
	- name: Run tests
	run: cargo test --verbose

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