Avoid Hardcoding `us-east-1` in Bucket Creation Logic

[Mohiiit]

Description:
The current implementation of the create_bucket function hardcodes the region us-east-1 when creating an S3 bucket. AWS provides enums for region constraints, and hardcoding a specific region can lead to reduced flexibility and potential region mismatch errors.

Current Code Snippet:

async fn create_bucket(&self, bucket_name: &str) -> Result<()> {
    if self.bucket_location_constraint.as_str() == "us-east-1" {
        self.client.create_bucket().bucket(bucket_name).send().await?;
        return Ok(());
    }

    let bucket_configuration = Some(
        CreateBucketConfiguration::builder().location_constraint(self.bucket_location_constraint.clone()).build(),
    );

    self.client
        .create_bucket()
        .bucket(bucket_name)
        .set_create_bucket_configuration(bucket_configuration)
        .send()
        .await?;

    Ok(())
}

Proposed Change:

• Replace the hardcoded check for us-east-1 with a comparison against AWS-provided enums for region constraints.
• Ensure that the condition correctly handles regions that may not require an explicit location_constraint.

Expected Outcome:

• The code dynamically adapts to AWS enums for region constraints.
• Avoids potential errors or failures due to hardcoded region checks.

Additional Context:
A previous attempt to address this issue resulted in failing tests. Careful validation and testing are required to ensure correctness this time.