upgrade go version to 1.20and add more go version for linux ci. #271

	# Reference from:
	# https://github.com/c-bata/go-prompt/blob/master/.github/workflows/test.yml
	name: build-and-test-linux with coverage
	on:
	pull_request:
	branches:
	- main
	push:
	branches:
	- main
	jobs:
	build-and-test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go-version: [ '1.20', '1.21', '1.22', '1.23' ]
	steps:
	- name: Git checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go-version }}
	- run: go version
	- run: go env
	- run: go test ./...
	- run: go build
	- name: Run go tests with coverage
	env:
	GO111MODULE: on
	run: make cover
	- name: Send coverage
	uses: shogo82148/actions-goveralls@v1
	with:
	path-to-profile: coverage.out
	- name: Set up python 3.9
	uses: actions/setup-python@v5
	with:
	python-version: 3.9
	- name: test preprocess
	run: cd scripts/preprocess && make test

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