dev: update readAllSync #101

Job	Run time
test-canary (2.0.0-rc.4, ubuntu-latest)	5m 41s
test (1.39.1, ubuntu-latest)	5m 8s
test-canary (2.0.0-rc.4, macos-latest)	1s
test (1.39.1, macos-latest)	3m 45s
test-canary (2.0.0-rc.4, windows-latest)	25s
test (1.39.1, windows-latest)	27s
test (1.38.1, ubuntu-latest)	5m 46s
test (1.38.1, macos-latest)	3m 58s
test (1.38.1, windows-latest)	28s
test (1.41.3, ubuntu-latest)	6m 23s
test (1.41.3, macos-latest)	4m 12s
test (1.41.3, windows-latest)	25s
test (1.45.5, ubuntu-latest)	4m 22s
test (1.45.5, macos-latest)	3m 47s
test (1.45.5, windows-latest)	24s
test (1.46.3, ubuntu-latest)	5m 43s
test (1.46.3, macos-latest)	3m 36s
test (1.46.3, windows-latest)	25s
	54m 56s

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