add failted to deploy slackops notice to deploy actions

AutoGPT Platofrm -Deploy Prod Environment should never fail silently without significant bubbling up. Put a message in the discord deployment channel if there are failures in any step

Start by locating the “AutoGPT Platform - Deploy Prod Environment” deployment action and reviewing how its steps report failures. Confirm how messages are sent to the Discord deployment channel; the work is done when failures from any deployment step produce a clear notification instead of failing silently.

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