bump minimum go version for main #3

	name: Main
	on:
	push:
	branches:
	- main

	permissions:
	contents: read

	jobs:
	go-bench:
	strategy:
	matrix:
	go-version: [ '1.20', 'stable' ]
	runs-on: ubuntu-latest
	timeout-minutes: 15
	steps:
	- uses: actions/checkout@v3

	- uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go-version }}

	- name: Run benchmark and store the output to a file
	run: \|
	set -o pipefail
	make bench \| tee bench_output.txt

	- name: Get benchmark as JSON
	uses: benchmark-action/github-action-benchmark@v1
	with:
	# What benchmark tool the output.txt came from
	tool: 'go'
	# Where the output from the benchmark tool is stored
	output-file-path: bench_output.txt
	# Write benchmarks to this file
	external-data-json-path: ./cache/benchmark-data.json
	# Workflow will fail when an alert happens
	fail-on-alert: true
	github-token: ${{ secrets.GITHUB_TOKEN }}

	- name: Get CPU information
	uses: kenchan0130/[email protected]
	id: system-info

	- name: Save benchmark JSON to cache
	uses: actions/cache/save@v3
	with:
	path: ./cache/benchmark-data.json
	# Save with commit hash to avoid "cache already exists"
	# Save with OS & CPU info to prevent comparing against results from different CPUs
	key: ${{ github.sha }}-${{ runner.os }}-${{ steps.system-info.outputs.cpu-model }}-go-benchmark

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