dashboard/config: regenerate Android 6.12 configs #16781

Job	Run time
aux	4m 14s
gvisor	3m 56s
build	3m 35s
arch (presubmit_arch_linux)	10m 24s
dashboard	2m 21s
race	7m 10s
race_dashboard	4m 1s
arch (presubmit_arch_netbsd)	3m 57s
old	7m 1s
arch (presubmit_arch_openbsd)	4m 5s
arch (presubmit_arch_freebsd)	6m 15s
arch (presubmit_arch_executor)	3m 26s
arch (presubmit_arch_windows)	3m 35s
arch (presubmit_arch_darwin)	3m 58s
	1h 7m 58s

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