Restore aws to required providers

[ajax-mykhailo-oleksiuk]

Versions

• Module version [Required]: 6.5.3

• Terraform version: 1.6.3

• Provider version(s): hashicorp/aws 5.41.0

Reproduction Code [Required]

Due to dropped required provider here - https://github.com/terraform-aws-modules/terraform-aws-rds/pull/542/files#diff-dfd5848fa77a04d0343891fe859286cc210473d10f0e62c7f99f0d5ecf1a9927L3-L9

I'm getting this warning:

Warning: Reference to undefined provider
│
│   on master.tf line 35, in module "master":
│   35:     aws = aws.master
│
│ There is no explicit declaration for local provider name "aws" in module.master, so Terraform is assuming you mean to pass a configuration for "hashicorp/aws".
│
│ If you also control the child module, add a required_providers entry named "aws" with the source address "hashicorp/aws".

Expected behavior

Restore required_provider

Additional context

Similar issue with eks module - terraform-aws-modules/terraform-aws-ecs#180
And @antonbabenko's commenton it - terraform-aws-modules/terraform-aws-ecs#180 (comment)

[antonbabenko]

Please open a PR where you revert changes to versions.tf

[github-actions]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.