Add Windows to README as tested platform #708

	# Copyright 2023 The Sigstore Authors.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
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	name: "Build and test"

	on:
	push:
	branches: [main]
	pull_request: {}

	permissions:
	contents: read

	jobs:
	build:
	strategy:
	fail-fast: false
	matrix:
	os: [macos-latest, ubuntu-latest, windows-latest]
	runs-on: ${{ matrix.os }}
	steps:
	- name: Checkout repository
	uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
	with:
	fetch-depth: 0
	fetch-tags: true
	- name: Install Go
	uses: actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32 # v5.0.2
	with:
	go-version-file: go.mod
	- name: Build binaries
	run: make all
	- name: Run tests
	run: make test

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