Make access to ArrayDeque synchronized #5648

Job	Run time
build-graal	9m 19s
Build (macos-latest, 11)	6m 2s
Build (macos-latest, 17)	5m 44s
Build (macos-latest, 21)	5m 1s
Build (macos-latest, 23)	6m 19s
Build (macos-13, 8)	8m 31s
Build (ubuntu-latest, 8)	4m 58s
Build (ubuntu-latest, 11)	5m 48s
Build (ubuntu-latest, 17)	5m 33s
Build (ubuntu-latest, 21)	5m 43s
Build (ubuntu-latest, 23)	5m 25s
Build (windows-latest, 8)	7m 12s
Build (windows-latest, 11)	7m 29s
Build (windows-latest, 17)	7m 28s
Build (windows-latest, 21)	7m 45s
Build (windows-latest, 23)	7m 28s
Build (ubuntu-20.04, 21, true, true)	5m 35s
markdown-link-check / markdown-link-check	8s
misspell-check / misspell-check	10s
publish-snapshots (skipped)	8s
required-status-check	1s
	1h 51m 47s

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