quiet "redundant ignore_changes" warning

[dradetsky]

Motivation and Context

Terraform emits the warning

╷
│ Warning: Redundant ignore_changes element
│
│   on .terraform/modules/k8s.eks/main.tf line 305, in resource "aws_eks_addon" "this":
│  305: resource "aws_eks_addon" "this" {
│
│ Adding an attribute name to ignore_changes tells Terraform to ignore future changes to the
│ argument in configuration after the object has been created, retaining the value originally
│ configured.
│
│ The attribute modified_at is decided by the provider alone and therefore there can be no
│ configured value to compare with. Including this attribute in ignore_changes has no effect.
│ Remove the attribute from ignore_changes to quiet this warning.

Which I would like to go away. I trust it is correct that this is in fact determined by the provider.

How Has This Been Tested?

- [ ] I have updated at least one of the examples/* to demonstrate and validate my change(s) N/A

• I have tested and validated these changes using one or more of the provided examples/* projects

• I have executed pre-commit run -a on my pull request

[bryantbiggs]

Duplicate of #2114

[github-actions]

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