can's connect to aws s3 with ak/sk in /etc/default/teleport

[LingyuYin]

Expected behavior:
sessions can be uploaded to s3

Current behavior:
the session can't uploaded

Bug details:

• Teleport version
• Teleport v17.2.8 git:v17.2.8-0-g4504397 go1.23.6
• Recreation steps
• I deploy the teleport in a VM in AliCloud, and try to use AWS S3 as the sessions store,
  I write the as/sk in /etc/default/teleport, and .aws/credentials and .aws/config
  The IAM policy is correct,
  but when teleport start, there is a log like this:

2025-02-25T20:42:03.282+08:00 ERRO [S3]        Failed to ensure that S3 bucket exists. This is expected if External Audit Storage is enabled or if Teleport has write-only access to the bucket, otherwise S3 session uploads may fail. bucket:records-prod error:[operation error S3: HeadBucket, get identity: get credentials: failed to refresh cached credentials, no EC2 IMDS role found, operation error ec2imds: GetMetadata, canceled, context deadline exceeded] s3sessions/s3handler.go:457

and when it tried to upload log comes like this:

2025-02-25T19:42:38.660+08:00 WARN [AUTH:COMP] Failed to check uploads. error:[
ERROR REPORT:
Original Error: *smithy.OperationError operation error S3: ListMultipartUploads, get identity: get credentials: failed to refresh cached credentials, no EC2 IMDS role found, operation error ec2imds: GetMetadata, canceled, context deadline exceeded
Stack Trace:
	github.com/gravitational/teleport/lib/events/complete.go:217 github.com/gravitational/teleport/lib/events.(*UploadCompleter).CheckUploads
	github.com/gravitational/teleport/lib/events/complete.go:206 github.com/gravitational/teleport/lib/events.(*UploadCompleter).PerformPeriodicCheck
	github.com/gravitational/teleport/lib/events/complete.go:170 github.com/gravitational/teleport/lib/events.(*UploadCompleter).Serve
	runtime/asm_amd64.s:1700 runtime.goexit
User Message: operation error S3: ListMultipartUploads, get identity: get credentials: failed to refresh cached credentials, no EC2 IMDS role found, operation error ec2imds: GetMetadata, canceled, context deadline exceeded] events/complete.go:209
2025-02-25T19:45:12.537+08:00 ERRO [AUTH:GRPC] Failed to create audit stream: "CreateMultiPartUpload session(5318d02d-36a1-4338-a1f1-9552f388c0dc)\n\toperation error S3: CreateMultipartUpload, get identity: get credentials: request canceled, context canceled". auth/grpcserver.go:358

my config is like this:

audit_sessions_uri: "s3://xxx-teleport-audit/records-xxx"
region: ap-northeast-1

• Debug logs
• as shows above