[Enhancement]: aws_dx_connection add support for 400Gbps direct connects

[catlike]

Description

The required bandwidth argument does not recognize 400Gbps as a valid value. This makes it impossible to configure 400Gbps dedicated direct connects within Terraform.

Affected Resource(s) and/or Data Source(s)

aws_dx_connection

Potential Terraform Configuration

resource "aws_dx_connection" "example" {
  name            = "tf-dx-connection"
  bandwidth       = "400Gbps"
  location        = "EqDC2"
  request_macsec  = true
  encryption_mode = "must_encrypt"
}

References

AWS launch announcement introducing 400Gbps Direct Connects
AWS Direct Connect API Documentation referencing 400Gbps as a supported value for dedicated direct connects
Terraform resource documentation does not include 400Gbps as supported option
/internal/service/directconnect/validate.go does not allow 400Gbps as a supported value

Would you like to implement a fix?

Yes

[github-actions]

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