[BUG] Throwing error on executing command to get settings from Elastic Search with aws_iam as auth_type

[varshakancham]

What is the bug?
Throwing the following error while executing curl get command on es cluster.
rsreevarsha@rsreevarsha-a01 opensearch-cli % ./opensearch-cli curl get --path "_cluster/settings" --pretty --profile "default"
get Command failed.
Reason: NoCredentialProviders: no valid providers in chain. Deprecated.
For verbose messaging see aws.Config.CredentialsChainVerboseErrors

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Go to opensearch-cli
2. Enter following curl command ./opensearch-cli curl get --path "_cluster/settings" --pretty --profile "default"
3. See error:- Reason: NoCredentialProviders: no valid providers in chain. Deprecated.
   For verbose messaging see aws.Config.CredentialsChainVerboseErrors

What is the expected behavior?
The command should have returned the settings of cluster.

What is your host/environment?

• OS: Mac OS
• OpenSearch version[e.g. 1.0.0]

Do you have any additional context?
Following is the profile created and region set to us-east-1:-

• name: default
  endpoint: https://search-testcluster-jvn7ggvlt7gkbea4furdy6ydzu.us-east-1.es.amazonaws.com
  aws_iam:
  profile: redshirt
  service: es
  max_retry: 3
  timeout: 10