livecheck migration: add strategies

Co-authored-by: Sam Ford <1584702+samford@users.noreply.github.com>
Co-authored-by: Thierry Moisan <thierry.moisan@gmail.com>
Co-authored-by: Dawid Dziurla <dawidd0811@gmail.com>
Co-authored-by: Maxim Belkin <maxim.belkin@gmail.com>
Co-authored-by: Issy Long <me@issyl0.co.uk>
Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>
Co-authored-by: Seeker <meaningseeking@protonmail.com>

docs: add sorbet documentation

Bump patchelf from 1.2.0 to 1.3.0 in /Library/Homebrew

Bumps [patchelf](https://github.com/david942j/patchelf.rb) from 1.2.0 to 1.3.0.
- [Release notes](https://github.com/david942j/patchelf.rb/releases)
- [Commits](https://github.com/david942j/patchelf.rb/commits

)

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

Fix unvendored RubyGems

- Avoid caching RubyGems in GitHub Actions `tests.yml` to catch this in
  future.
- Run `brew doctor` in GitHub Actions `tests.yml` after installing
  RubyGems to catch this in future.
- Ignore relevant RubyGems (and fix outdated comments)
- Never auto-`require` RubyGems that aren't vendored.
- Update `bundler/setup.rb`.

Bump tapioca from 0.4.3 to 0.4.4 in /Library/Homebrew

Bump sorbet-runtime from 0.5.5877 to 0.5.5880 in /Library/Homebrew

sorbet: update RBI files using Tapioca.

Bumps [sorbet-runtime](https://github.com/sorbet/sorbet) from 0.5.5877 to 0.5.5880.
- [Release notes](https://github.com/sorbet/sorbet/releases)
- [Commits](https://github.com/sorbet/sorbet/commits

)

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

Bumps [tapioca](https://github.com/Shopify/tapioca) from 0.4.3 to 0.4.4.
- [Release notes](https://github.com/Shopify/tapioca/releases)
- [Commits](https://github.com/Shopify/tapioca/compare/v0.4.3...v0.4.4

)

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

Bump sorbet from 0.5.5877 to 0.5.5880 in /Library/Homebrew

Autogenerated by [a scheduled GitHub Action](https://github.com/Homebrew/brew/blob/master/.github/workflows/tapioca.yml).

Bumps [sorbet](https://github.com/sorbet/sorbet) from 0.5.5877 to 0.5.5880.
- [Release notes](https://github.com/sorbet/sorbet/releases)
- [Commits](https://github.com/sorbet/sorbet/commits

)

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

dev-cmd: add `brew typecheck` command

This will allow us to verify that we can merge new sorbet/tapioca
updates.

cli/named_args: Print correct cask ref when name is loaded as formula/keg

metafiles: copy all license files

This PR adds a new `brew typecheck` developer command which checks for
typechecking errors in the current code with Sorbet.

upgrade: fix undefined method 'reinstall_formula'

Add the `Homebrew.` module prefix to fix an undefined method.
Also, use `uniq` to deduplicate the list of broken dependents.

sorbet: update RBI files using Tapioca.

workflows: don't test paths on `master`.

docs: update license documentation

Autogenerated by [a scheduled GitHub Action](https://github.com/Homebrew/brew/blob/master/.github/workflows/tapioca.yml).

This avoids weirdness like the merged PR commits being pushed to scheduled opened PRs after merging.

It also avoids wasting resources.

audit: don't allow both sha256 and tag/revision for formula

Document `LivecheckFormula`.

Document download strategies.

Document `SharedAudits`.