Add credential prompts for PKCS11-based SSH keys (#4646)

- **PR Description**
Similar to #2239, add credential prompts for PKCS11-based SSH keys.
OpenSSH code reference is
[here](2827b6ac30/ssh-pkcs11.c (L263)).

pkg/commands/oscommands/cmd_obj_runner.go

@@ -391,6 +391,7 @@ func (self *cmdObjRunner) getCheckForCredentialRequestFunc() func([]byte) (Crede
 		`Username\s*for\s*'.+':`:                 Username,
 		`Enter\s*passphrase\s*for\s*key\s*'.+':`: Passphrase,
 		`Enter\s*PIN\s*for\s*.+\s*key\s*.+:`:     PIN,
+		`Enter\s*PIN\s*for\s*'.+':`:              PIN,
 		`.*2FA Token.*`:                          Token,
 	}
 

pkg/commands/oscommands/cmd_obj_runner_test.go

@@ -89,11 +89,17 @@ func TestProcessOutput(t *testing.T) {
 			expectedToWrite:         "passphrase",
 		},
 		{
-			name:                    "pin prompt",
+			name:                    "security key pin prompt",
 			promptUserForCredential: defaultPromptUserForCredential,
 			output:                  "Enter PIN for key '123':",
 			expectedToWrite:         "pin",
 		},
+		{
+			name:                    "pkcs11 key pin prompt",
+			promptUserForCredential: defaultPromptUserForCredential,
+			output:                  "Enter PIN for '123':",
+			expectedToWrite:         "pin",
+		},
 		{
 			name:                    "2FA token prompt",
 			promptUserForCredential: defaultPromptUserForCredential,