Install "async" module back #1189

	name: CI
	on:
	pull_request:
	branches:
	- main
	push:
	branches:
	- main
	concurrency:
	group: ${{ github.ref }}-${{ github.workflow }}
	cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
	jobs:
	lint:
	name: Lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: JohnnyMorganz/stylua-action@v4
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	version: latest
	args: --config-path .stylua.toml ./lua ./spec
	- uses: cargo-bins/cargo-binstall@main
	- name: Selene
	run: \|
	cargo binstall --no-confirm selene
	selene --config selene.toml ./lua
	- uses: stevearc/nvim-typecheck-action@v2
	with:
	path: lua
	configpath: ".luarc.json"
	unit_test:
	name: Unit Test
	strategy:
	matrix:
	nvim_version: [v0.10.0, stable, nightly]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v5
	- uses: rhysd/action-setup-vim@v1
	with:
	neovim: true
	version: ${{ matrix.nvim_version }}
	- name: Run Test Cases
	run: make test

Provide feedback