Test

Fix bug custom region_key concatenate #1489

Job	Run time
test (3.10, ubuntu-latest)	18m 2s
test (3.12, ubuntu-latest)	20m 17s
test (macos-latest, 3.10)	5m 31s
test (macos-latest, 3.12, --pre, Python 3.12 (pre-release))	6m 31s
	50m 21s

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