def get_tasks(boards: dict) -> dict:
    """
    Take boards dictionaries and return tasks dictionaries.

    Extract tasks dictionary from the all boards and merge them all together.

    Args:
    ----
        boards (dict): A dictionary containing dictionaries of all the boards.

    Returns
    -------
        A dictionary containing dictionaries of all the tasks.

    """
    tasks = {}
    for board in boards.values():
        tasks.update(board['tasks'])
    return tasks