s3 backend: Failed to save state, encryption method specified is not supported

[AntoineAugusti]

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Terraform Version

terragrunt version 0.93.8
OpenTofu v1.10.7

Affected Resource(s)

• scaleway s3 backend

Terraform Configuration Files

terraform {
  backend "s3" {
    endpoint                    = "s3.fr-par.scw.cloud"
    bucket                      = "lvao-terraform-state"
    key                         = "${path_relative_to_include()}/terraform.tfstate"
    region                      = "fr-par"
    skip_credentials_validation = true
    skip_region_validation      = true
    # `encrypt = true` is important
    encrypt                     = true
    access_key                  = var.access_key
    secret_key                  = var.secret_key
  }
}

Debug Output

https://gist.github.com/AntoineAugusti/220f32ee05c8f1017f81ed3b389ce817

Panic Output

Expected Behavior

State is saved.

Actual Behavior

Tofu error and state is not saved.

Steps to Reproduce

1. terraform apply

Important Factoids

encrypt = false resolves the issue.
I don't know how to configure the encryption mecanism.

References

[AntoineAugusti]

https://www.scaleway.com/en/docs/object-storage/troubleshooting/400-error-aes256/ may explain the API change