os/mac/xcode: add additional CLT download link.

Sadly Apple don't seem to be providing these reliably.

Fixes #6796

build: bump zeitwerk from 2.2.1 to 2.2.2 in /Library/Homebrew

README: Remove Patreon badge for consistency amongst donation methods

Bumps [zeitwerk](https://github.com/fxn/zeitwerk) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/fxn/zeitwerk/releases)
- [Changelog](https://github.com/fxn/zeitwerk/blob/master/CHANGELOG.md)
- [Commits](https://github.com/fxn/zeitwerk/compare/v2.2.1...v2.2.2

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

- We don't have a badge for other donation methods - this looked slightly out of place.

Fix `brew cask style`.

This verifies the cask configuration hasn't been broken.

Broken since a RuboCop update.

These sometimes display useful RuboCop deprecations.

Issues: add section for brew config & doctor output

workflows/apidoc: try to rebase before pushing.

build: bump rubocop from 0.76.0 to 0.77.0 in /Library/Homebrew

This avoids failures when you have two `master` builds running at once.

Update document about Alternative Installation

Remove STANDARD_COMPILERS & references to it

Symbolic link creation does not depend on current directory

build: bump faraday from 0.17.0 to 0.17.1 in /docs

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.76.0 to 0.77.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop/compare/v0.76.0...v0.77.0

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [faraday](https://github.com/lostisland/faraday) from 0.17.0 to 0.17.1.
- [Release notes](https://github.com/lostisland/faraday/releases)
- [Changelog](https://github.com/lostisland/faraday/blob/master/CHANGELOG.md)
- [Commits](https://github.com/lostisland/faraday/compare/v0.17.0...v0.17.1

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

workflows/tests: tweak behaviour by OS.

This should speed up Homebrew/brew testing by not running generic or
no-compat tests on macOS.

build: bump rubocop-rspec from 1.36.0 to 1.37.0 in /Library/Homebrew

deps: use `runtime_dependencies` more readily.

This is useful when debugging locally.

Bumps [rubocop-rspec](https://github.com/rubocop-hq/rubocop-rspec) from 1.36.0 to 1.37.0.
- [Release notes](https://github.com/rubocop-hq/rubocop-rspec/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop-rspec/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop-rspec/compare/v1.36.0...v1.37.0

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

If all the passed packages are currently installed then use
`runtime_dependencies` to get dependency data more quickly and
accurately.

As discussed in https://github.com/Homebrew/brew/issues/6769.

GitHub Actions: get username if we don't have it

catworkflows/tests: skip update-test unless on a PR.