Ignore key types instead of returning an error in the agent client

Dependencies

• [2] 7FRJYUI6 Reboot because of a bad change
• [3] 55M4M5YU Fake agent client on Windows

Change contents

• replacement in thrussh-keys/src/agent/client.rs at line 255
  [2.148374]→[2.148374:148457](∅→∅)
  − t => return Err(Error::UnsupportedKeyType(t.to_vec()).into()),
  [2.148374]

  [2.148457]
  + t => {

  + info!("Unsupported key type: {:?}", std::str::from_utf8(t))

  + }