[FEAT] Support for "bind_secret_id" in Approle auth method

[yogesh-mishra-pagero]

While trying to fetch secrets from Vault using approle auth method. It is currently not possible to use only the RoleID to fetch the secrets.
Which should be allowed.

Describe the solution you'd like

Enable support for "bind_secret_id" in approle authentication method of the vault github action. As described in the link --> https://developer.hashicorp.com/vault/docs/auth/approle#secretid

Describe alternatives you've considered

Using the vault cli to do the same activity. Which makes for a brittle way of doing that.

Additional context

https://github.com/hashicorp/vault-action?tab=readme-ov-file#approle