Add flag to limit parallelism when linking inputs from filecache. #5773

	name: "Build Windows executor"

	on:
	pull_request:
	branches:
	- master

	jobs:
	build:
	runs-on: windows-2022
	if: "!contains(github.event.head_commit.message, 'ci skip')"

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Build
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	# Because "startup" options could not be assigned to different configs in .bazelrc, we are adding them directly here.
	# These options follow the best practices in https://bazel.build/configure/windows. Specifically:
	# - Set output_user_root to the shortest path possible to avoid Windows path length limitations.
	# Without this, actions with longer path input files would fail randomly with irrelevant errors.
	#
	# - Enable windows symlink helps reduce disk usage.
	# Without this, files will be fully copied instead.
	run: \|
	$authArgs = @()
	$apiKey = '${{ secrets.BUILDBUDDY_ORG_API_KEY }}'
	if ($apiKey) {
	$authArgs = @("--remote_header=x-buildbuddy-api-key=$apiKey")
	}
	bazelisk --output_user_root=D:/0 --windows_enable_symlinks build --config=untrusted-ci-windows @authArgs //enterprise/server/cmd/executor:executor

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