deadfinder 1.3.4 (new formula)

[p-linnane]

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• 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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This cannot use system Ruby, so that audit is failing. Removing that audit was discussed previously, so I'm going to look into that as well.

[github-actions]

@chenrui333 has requested bottles to be published to this PR.