Provide `Authorization` header when downloading `update-job-proxy` #6385

Job	Run time
Packaging: Config and input passed to the CLI (macos-latest, default)	2m 10s
Packaging: Config and input passed to the CLI (ubuntu-latest, nightly-latest)	1m 30s
Packaging: Config and input passed to the CLI (windows-latest, nightly-latest)	3m 41s
Packaging: Config and input passed to the CLI (macos-latest, nightly-latest)	2m 15s
Packaging: Config and input passed to the CLI (macos-latest, linked)	2m 24s
Packaging: Config and input passed to the CLI (ubuntu-latest, linked)	1m 30s
Packaging: Config and input passed to the CLI (ubuntu-latest, default)	1m 25s
Packaging: Config and input passed to the CLI (windows-latest, default)	11m 7s
Packaging: Config and input passed to the CLI (windows-latest, linked)	8m 23s
	34m 25s

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