Switch from bot PAT to GitHub App token via Azure Key Vault #35753

Job	Run time
format	25s
typecheck	44s
misc	27s
knip	31s
package-size	1m 32s
smoke	57s
self-check	54s
coverage	12m 4s
baselines	7m 33s
Test Node 14 on windows-latest	14m 18s
Test Node 14 on ubuntu-latest	11m 57s
Test Node lts/* on ubuntu-latest with --no-bundle	10m 53s
Test Node 24 on windows-latest	10m 27s
Test Node 24 on ubuntu-latest	8m 39s
lint	59s
required	3s
	1h 22m 23s

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