Provide `Authorization` header when downloading `update-job-proxy` #5204

Job	Run time
Config export (macos-latest, nightly-latest)	1m 15s
Config export (ubuntu-latest, nightly-latest)	1m 5s
Config export (macos-latest, linked)	1m 28s
Config export (windows-latest, nightly-latest)	2m 29s
Config export (ubuntu-latest, linked)	1m 7s
Config export (windows-latest, linked)	2m 37s
	10m 1s

Provide feedback