spv: Move getheaders stage to global syncer instead of per-peer #2437

	name: Build and Test
	on: [push, pull_request]
	permissions:
	contents: read

	jobs:
	build:
	name: Go CI
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: ["1.20", "1.21"]
	steps:
	- name: Set up Go
	uses: actions/setup-go@93397bea11091df50f3d7e59dc26a7711a8bcfbe #4.1.0
	with:
	go-version: ${{ matrix.go }}
	- name: Check out source
	uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 #v3.6.0
	- name: Build
	run: go build ./...
	- name: Test
	run: \|
	sh ./run_tests.sh

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