remove-disabled-packages: switch to create-pull-request action

[carlocab]

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

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Also, create an issue whenever this workflow fails.

[MikeMcQuaid]

Thanks @carlocab!

Also, create an issue whenever this workflow fails.

Feature request for @carlocab @ZhongRuoyu @cho-m @Bo98 or whomever most cares: make this into an action we can use here, in the formulae.brew.sh scheduled workflow, in the Homebrew/brew release workflow and anywhere else we would find it useful to know about these failures (e.g. brew bump workflow?).