feat(ci): AWS S3 SigV4リージョンのE2Eテストを追加 #372

Job	Run time
E2E User Tests (Flowable Batch)	1h 20m 58s
E2E User Tests (AWS S3 SigV4 Regions)	23m 55s
E2E User Tests (WEKO Workflow)	1h 51m 26s
E2E User Tests (MinIO)	1h 4m 4s
E2E User Tests (Flowable Forms)	29m 41s
E2E User Tests (WEKO Direct)	1h 53m 3s
E2E Migration Test from 20250906	1h 22m 55s
E2E User Tests (Flowable Roles)	46m 31s
E2E Admin Tests (MinIO)	52m 0s
E2E Admin Tests	25m 59s
E2E User Tests (Metadata)	53m 1s
E2E User Tests	53m 10s
E2E User Tests (JupyterHub)	1h 22m 34s
	13h 39m 17s

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