Fix code scanning alert no. 2: Clear-text logging of sensitive inform…

…ation

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

bitcoin_safe/gui/qt/dialogs.py

@@ -285,6 +285,6 @@ def filename(self) -> str:
     dialog = PasswordCreation()
     password = dialog.get_password()
     if password:
-        print(f"Password created: {password}")
+        print("Password created successfully.")
     sys.exit(app.exec())
     quit()