Allow usage of unsigned S3 client #351

Job	Run time
Integration / Integration tests (3.8, S3, s3torchconnectorcistack-cibucketdeebc8b6-cozetiwes62w, eu-north-1, ht...	9m 29s
Integration / Integration tests (3.8, S3 Express, pytorch-express-cibucket--eun1-az1--x-s3, eu-north-1, EXPRESS...	13m 41s
Integration / Integration tests (3.9, S3, s3torchconnectorcistack-cibucketdeebc8b6-cozetiwes62w, eu-north-1, ht...	7m 1s
Integration / Integration tests (3.9, S3 Express, pytorch-express-cibucket--eun1-az1--x-s3, eu-north-1, EXPRESS...	7m 53s
Integration / Integration tests (3.10, S3, s3torchconnectorcistack-cibucketdeebc8b6-cozetiwes62w, eu-north-1, h...	7m 11s
Integration / Integration tests (3.10, S3 Express, pytorch-express-cibucket--eun1-az1--x-s3, eu-north-1, EXPRES...	6m 57s
Integration / Integration tests (3.11, S3, s3torchconnectorcistack-cibucketdeebc8b6-cozetiwes62w, eu-north-1, h...	6m 51s
Integration / Integration tests (3.11, S3 Express, pytorch-express-cibucket--eun1-az1--x-s3, eu-north-1, EXPRES...	6m 26s
Integration / Integration tests (3.12, S3, s3torchconnectorcistack-cibucketdeebc8b6-cozetiwes62w, eu-north-1, h...	8m 9s
Integration / Integration tests (3.12, S3 Express, pytorch-express-cibucket--eun1-az1--x-s3, eu-north-1, EXPRES...	6m 53s
	1h 20m 31s

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