Provide `Authorization` header when downloading `update-job-proxy` #6391

Job	Run time
Packaging: Config and input passed to the CLI (macos-latest, nightly-latest)	1m 37s
Packaging: Config and input passed to the CLI (macos-latest, linked)	1m 49s
Packaging: Config and input passed to the CLI (ubuntu-latest, nightly-latest)	1m 33s
Packaging: Config and input passed to the CLI (ubuntu-latest, linked)	1m 34s
Packaging: Config and input passed to the CLI (windows-latest, linked)	3m 35s
Packaging: Config and input passed to the CLI (windows-latest, nightly-latest)	4m 32s
Packaging: Config and input passed to the CLI (ubuntu-latest, default)	1m 19s
Packaging: Config and input passed to the CLI (windows-latest, default)	3m 5s
Packaging: Config and input passed to the CLI (macos-latest, default)	1m 43s
	20m 47s

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