add write-only key payload field

Author: rubenhoenle

docs/resources/volume.md

@@ -4,11 +4,14 @@ page_title: "stackit_volume Resource - stackit"
 subcategory: ""
 description: |-
   Volume resource schema. Must have a region specified in the provider configuration.
+  -> Note: Write-Only argument key_payload_base64_wo is available to use in place of key_payload_base64. Write-Only arguments are supported in HashiCorp Terraform 1.11.0 and later. Learn more https://developer.hashicorp.com/terraform/language/resources/ephemeral#write-only-arguments.
 ---
 
 # stackit_volume (Resource)
 
-Volume resource schema. Must have a `region` specified in the provider configuration.
+Volume resource schema. Must have a `region` specified in the provider configuration. 
+
+-> **Note:** Write-Only argument `key_payload_base64_wo` is available to use in place of `key_payload_base64`. Write-Only arguments are supported in HashiCorp Terraform 1.11.0 and later. [Learn more](https://developer.hashicorp.com/terraform/language/resources/ephemeral#write-only-arguments).
 
 ## Example Usage
 
@@ -69,6 +72,8 @@ Required:
 Optional:
 
 - `key_payload_base64` (String, Sensitive) Optional predefined secret, which will be encrypted against the key-encryption-key within the STACKIT-KMS. If not defined, a random secret will be generated by the API and encrypted against the STACKIT-KMS. If a key-payload is provided here, it must be base64 encoded.
+- `key_payload_base64_wo` (String, Sensitive, [Write-only](https://developer.hashicorp.com/terraform/language/resources/ephemeral#write-only-arguments)) Optional predefined secret, which will be encrypted against the key-encryption-key within the STACKIT-KMS. If not defined, a random secret will be generated by the API and encrypted against the STACKIT-KMS. If a key-payload is provided here, it must be base64 encoded.
+- `key_payload_base64_wo_version` (Number) Used together with `key_payload_base64_wo` to trigger an re-create. Increment this value when an update to `key_payload_base64_wo` is required.
 
 
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