Upgrade `octokit` to v4.1.2 #3797

Job	Run time
Diagnostic export (ubuntu-latest, nightly-latest)	1m 8s
Diagnostic export (windows-latest, nightly-latest)	4m 17s
Diagnostic export (windows-latest, linked)	3m 46s
Diagnostic export (macos-latest, nightly-latest)	1m 23s
Diagnostic export (macos-latest, linked)	1m 24s
Diagnostic export (ubuntu-latest, linked)	1m 8s
	13m 6s

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