Update macOS instructions to use default cask

[Jackenmen]

Description of the changes

See https://github.com/Homebrew/homebrew-cask-versions/pull/20190

Have the changes in this PR been tested?

Yes

macOS 12 & 13 x86_64: https://github.com/Jackenmen/Red-Install-Tests/actions/runs/8869931246 Everything else: https://cirrus-ci.com/build/5662373585879040

[Jackenmen]

The new instructions pass the install tests linked in the PR description so this should be good to go!

[red-githubbot[bot]]

6372 is a backport of this pull request to Red stable-docs.