- Add a new job `support-key-passphrase` to the GitHub Actions workflow
- Add steps to the new job for checking out code, adding public and private keys to the environment, and creating a new SSH server
- Add a step to the new job for running an SSH command with a passphrase
- Add a new private SSH key file `id_passphrase` to the test data
- Add a new public SSH key file `id_passphrase.pub` to the test data
Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
