Update codecov/codecov-action digest to ab904c4 #5

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	name: CI

	jobs:
	lint:
	name: Lint
	runs-on: ubuntu-latest
	env:
	RUSTFLAGS: -D warnings
	steps:
	- uses: actions/checkout@v4.1.1
	- uses: dtolnay/rust-toolchain@stable
	with:
	components: rustfmt, clippy
	- uses: Swatinem/rust-cache@v2.7.2
	- name: Lint (clippy)
	run: cargo clippy --all-features --all-targets
	- name: Lint (rustfmt)
	run: cargo xfmt --check
	- name: Run rustdoc
	env:
	RUSTC_BOOTSTRAP: 1 # for feature(doc_cfg)
	RUSTDOCFLAGS: -Dwarnings --cfg doc_cfg
	run: cargo doc --all-features --workspace
	- name: Check for differences
	run: git diff --exit-code

	build:
	name: Build and test
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	rust-version: ["1.60", stable]
	fail-fast: false
	env:
	RUSTFLAGS: -D warnings
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ matrix.rust-version }}
	- uses: Swatinem/rust-cache@v2
	- uses: taiki-e/install-action@cargo-hack
	- uses: taiki-e/install-action@nextest
	- name: Build
	run: cargo hack build --feature-powerset
	- name: Test
	run: cargo hack nextest run --feature-powerset
	- name: Run doctests
	run: cargo test --doc --all-features

Provide feedback