fix: aws_caller_identity and aws_partition allocated, even if var.create is false

[joaocc]

Description

This is to provide a simple fix to aws-ia/terraform-aws-eks-blueprints-addons#261 by avoiding allocating 2 data resources for each instantiation of this module, even when var.create is set to false.
Currently, on aws-ia/terraform-aws-eks-blueprints-addon 72 data elements are instantiated (26x2) even when the module is disabled.

• [X ] ✋ I have searched the open/closed issues and my issue is not listed.

Versions

• Module version [Required]: 1.1.x

Reproduction Code [Required]

module "test_empty" {
  source  = "aws-ia/eks-blueprints-addon/aws"
  version = "1.1.0"
  create = false
}

Expected behavior

"aws_caller_identity" and "aws_partition" only instantiated even if var.create is true

Actual behavior

"aws_caller_identity" and "aws_partition" are instantiated even if var.create is false