chore: set gh_token for prebuild dl #268

Job	Run time
test (macos-14, amd64, 16)	19s
test (macos-12, arm64, 16)	23s
test (windows-latest, amd64, 16)	46s
test (ubuntu-latest, amd64, false, false, 16)	45s
test (ubuntu-latest, arm64, false, true, 16)	3m 52s
test (ubuntu-latest, arm64, true, true, 16)	3m 13s
test (ubuntu-latest, amd64, true, true, 16)	54s
test (macos-14, amd64, 18)	20s
test (macos-12, arm64, 18)	23s
test (windows-latest, amd64, 18)	56s
test (ubuntu-latest, amd64, false, false, 18)	43s
test (ubuntu-latest, arm64, false, true, 18)	3m 53s
test (ubuntu-latest, arm64, true, true, 18)	3m 54s
test (ubuntu-latest, amd64, true, true, 18)	1m 3s
test (macos-14, amd64, 20)	20s
test (macos-12, arm64, 20)	22s
test (windows-latest, amd64, 20)	57s
test (ubuntu-latest, amd64, false, false, 20)	46s
test (ubuntu-latest, arm64, false, true, 20)	3m 59s
test (ubuntu-latest, arm64, true, true, 20)	3m 53s
test (ubuntu-latest, amd64, true, true, 20)	1m 2s
	32m 43s

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