feat: require Go >= 1.21 (#424) [Backport release-1.x] #865

	name: Continuous Integration
	on:
	pull_request:
	push:
	branches:
	- main
	- release-1.x

	jobs:
	build:
	name: Build
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go-version:
	- "1.21"
	- "1.22"

	steps:
	- name: Set up Go ${{ matrix.go-version }}
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go-version }}
	- name: Check out code into the Go module directory
	uses: actions/checkout@v3
	- name: Run tests
	run: go test -v ./...

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