Add Option to Change Authentication Requirement for Existing Secrets

[roa-beep]

Description

Once a secret is created in Secretive with the "Require Authentication" option, there's no way to change this setting to "Notify" without deleting and recreating the secret. This restricts flexibility, especially when frequent prompts disrupt workflow.

It would be helpful to have an option to modify the authentication setting of an existing secret, allowing changes between "Require Authentication" and "Notify" without needing to delete and recreate the secret.

Steps to Reproduce

1. Create a new secret in Secretive with the "Require Authentication" option.
2. Try to change the authentication requirement for the created secret.

Expected Behavior

An option to modify the authentication requirement (e.g., from "Require Authentication" to "Notify") for an existing secret.

Actual Behavior

No option to change the authentication setting after the secret is created. Only solution is to delete and recreate the secret with the desired setting.

Additional Context

Adding this feature would improve usability by allowing users to adjust security levels for SSH keys managed by Secretive based on changing needs.