Deprecated appcast for borg-wrapper cask

[cadupuy]

Guide

How to configure Borg client on macOS using command-line

Summary

While attempting to install borg-wrapper using Homebrew, I encountered an error related to the deprecated appcast stanza in the cask definition. The specific error message is as follows:

$ brew install --cask sunknudsen/tap/borg-wrapper

Error: Cask 'borg-wrapper' definition is invalid: 'appcast' stanza failed with: Calling the `appcast` stanza is disabled! Use the `livecheck` stanza instead.
Please report this issue to the sunknudsen/tap tap (not Homebrew/brew or Homebrew/homebrew-core), or even better, submit a PR to fix it:
  /opt/homebrew/Library/Taps/sunknudsen/homebrew-tap/Casks/borg-wrapper.rb:6