### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When folder names contain a space then `listObjects` returns names without `/` at the end. Without space it works fine.

### Expected Behavior

Folders containing space in the name are returned with `/` at the end.

### How are you starting LocalStack?

With a `docker run` command

### Steps To Reproduce

awslocal s3api put-object --bucket bucket-name --key "folder name/"

awslocal s3api list-objects --bucket bucket-name
```
{
    "Contents": [
        {
            "Key": "folder name",
            "LastModified": "2023-12-11T10:15:20.000Z",
            "ETag": "\"d41d8cd98f00b204e9800998ecf8427e\"",
            "Size": 0,
            "StorageClass": "STANDARD",
            "Owner": {
                "DisplayName": "webfile",
                "ID": "75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a"
            }
        }
    ],
    "RequestCharged": null
}
```


### Environment

```markdown
- OS: Linux Mint 21.2
- LocalStack: localstack/localstack:3.0
```


### Anything else?

_No response_
# upda
        empty_retention = aws_client.s3.put__retention(
            Bucket=s3_bucket_lock,
            Key=_key,
            Retention={},
            BypassGovernanceRetention=True,
        )
        snapshot.match("put--empty-retention", empty_retention)
        update_retention = aws_client.s3.put__retention(
            Bucket=s3_bucket_lock,
            Key=_key,
            Retention={
                "Mode": "GOVERNANCE",
                "RetainUntilDate": datetime.datetime.utcnow() + datetime.timedelta(seconds=5),
            },
        )
        snapshot.match("update-retention-", update_retention)
        # dele
        with pytest.raises(ClientError):
            aws_client.s3.delete_(Bucket=s3_bucket_lock, Key=_key, VersionId=version_id)
        # dele
        sleep = 10 if is_aws_cloud() else 6
        time.sleep(sleep)
        aws_client.s3.delete_(
            Bucket=s3_bucket_lock,
            Key=_key,
            VersionId=version_id,
        )
    @markers.aws.validated
    def test_s3_copy__retention_lock(self, s3_create_bucket, snapshot, aws_client):