Bump the go version to 1.21 #525

	---
	name: Main CI
	on: # yamllint disable-line rule:truthy
	workflow_dispatch:
	push:
	branches:
	- main
	pull_request:

	jobs:
	test:
	name: Test IBFT
	runs-on: ubuntu-latest
	steps:
	- name: Install Go
	uses: actions/setup-go@v3
	with:
	go-version: 1.21.x

	- name: Checkout code
	uses: actions/checkout@v3
	with:
	submodules: recursive

	- name: Go test
	run: go test -test.short -covermode=atomic -shuffle=on -coverprofile coverage.out -timeout 15m ./...

	- name: Upload coverage file to Codecov
	uses: codecov/codecov-action@v3
	with:
	files: coverage.out

	go_test_race:
	name: Test IBFT with Race
	runs-on: ubuntu-latest
	steps:
	- name: Setup Go
	uses: actions/setup-go@v3
	with:
	go-version: 1.21.x

	- name: Checkout Code
	uses: actions/checkout@v3
	with:
	submodules: recursive

	- name: Run Go Test with race
	run: go test -test.short -race -shuffle=on -timeout 15m ./...

	reproducible-builds:
	runs-on: ubuntu-latest
	steps:
	- name: Install Go
	uses: actions/setup-go@v3
	with:
	go-version: 1.21.x

	- name: Checkout code
	uses: actions/checkout@v3
	with:
	submodules: recursive

	- name: Reproducible build test
	run: \|
	make builds-dummy
	shasum -a256 ./build/ibft1 \| cut -d " " -f 1 > ibft1.sha256
	shasum -a256 ./build/ibft2 \| cut -d " " -f 1 > ibft2.sha256
	if ! cmp ibft1.sha256 ibft2.sha256; then
	echo >&2 "Reproducible build broken"; cat ibft1.sha256; cat ibft2.sha256; exit 1
	fi

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