Suffix major version upgrade branches with `-major` #472

	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	GOLANGCI_LINT_VERSION: v1.55.2
	name: Pull Request
	on: [pull_request]
	jobs:
	build:
	name: Build and Test
	strategy:
	matrix:
	go-version: [1.21.x]
	runs-on: ubuntu-latest
	steps:
	- name: Install Go
	uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go-version }}
	- name: Check out source code
	uses: actions/checkout@master
	- name: Download module dependencies
	env:
	GOPROXY: "https://proxy.golang.org"
	run: go mod download
	- name: Build
	run: make build
	- name: Install golangci-lint
	run: curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh \| sh -s -- -b "$(go env GOPATH)/bin" "${GOLANGCI_LINT_VERSION}"
	- name: Lint
	run: make lint
	- name: Test
	run: make test

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