Special characters need to be escaped

When using the slack block-kit message, every special character, including some that are used for markup (i.e: \n, \t, `text`), needs to be escaped, otherwise an error is thrown. It would be better if they could’ve been used just like they are on the Slack Block Kit Builder so that they can be directly copied from there with no extra editing.

Hi @luiznascimento1,

I can add those special character just fine without the escape character. Would you mind checking again?

Sorry, I forgot to reply to the thread, but it seems to throw this error when any input from previous steps of the workflow are used inside the blocks.