(fix) AWS Sagemaker Attack Technique - Use DisassociateLifecycleConfig instead of setting name to empty string

[Minosity-VR]

What does this PR do?

Bug Fix: Reverting the aws.execution.sagemaker-update-lifecycle-config attack fails with:

2026/03/24 10:36:46 Cleaning up aws.execution.sagemaker-update-lifecycle-config
2026/03/24 10:36:46 Reverting detonation of technique aws.execution.sagemaker-update-lifecycle-config
2026/03/24 10:36:46 Starting cleanup workflow for Notebook: stratus-red-team-update-sagemaker-config-profile-vuln-notebook and Config: priv-esc-config
2026/03/24 10:36:46 1/4. Stopping notebook instance...
2026/03/24 10:36:47    Notebook is stopped.
2026/03/24 10:36:47 2/4. Detaching lifecycle configuration...
2026/03/24 10:36:47 Cleanup failed: failed to detach lifecycle configuration: operation error SageMaker: UpdateNotebookInstance, https response error StatusCode: 400, RequestID: 35809a0b-bc50-47ec-a0dd-73cb20771198, api error ValidationException: 1 validation error detected: Value '' at 'lifecycleConfigName' failed to satisfy constraint: Member must satisfy regular expression pattern: [a-zA-Z0-9](-*[a-zA-Z0-9])*

By using the DisassociateLifecycleConfig argument to detach the config, it succeed:

./bin/stratus cleanup aws.execution.sagemaker-update-lifecycle-config 

2026/03/24 10:42:49 Cleaning up aws.execution.sagemaker-update-lifecycle-config
2026/03/24 10:42:49 Reverting detonation of technique aws.execution.sagemaker-update-lifecycle-config
2026/03/24 10:42:49 Starting cleanup workflow for Notebook: stratus-red-team-update-sagemaker-config-profile-vuln-notebook and Config: priv-esc-config
2026/03/24 10:42:49 1/4. Stopping notebook instance...
2026/03/24 10:42:50    Notebook is stopped.
2026/03/24 10:42:50 2/4. Detaching lifecycle configuration...
2026/03/24 10:42:50    Detach request successful. Status is now 'Updating'.
2026/03/24 10:42:50 3/4. Waiting for detach update to complete...
2026/03/24 10:43:21    Detach update complete. Notebook is back in 'Stopped' status.
2026/03/24 10:43:21 4/4. Deleting the lifecycle configuration...
2026/03/24 10:43:21 Cleanup complete: Config priv-esc-config deleted.
2026/03/24 10:43:21 Cleaning up technique prerequisites with terraform destroy
+-------------------------------------------------+-----------------------------------------------------------------------------+--------+
| ID                                              | NAME                                                                        | STATUS |
+-------------------------------------------------+-----------------------------------------------------------------------------+--------+
| aws.execution.sagemaker-update-lifecycle-config | Execute Commands on SageMaker Notebook Instance via Lifecycle Configuration | COLD   |
+-------------------------------------------------+-----------------------------------------------------------------------------+--------+