Refactor and document `Upgrade`.

Remove unused metadata from `bundle` spec.

Scheduled workflows fixes

- Ensure `spdx.yml` has same fixes as `tapioca.yml`.
- Don't `reset --hard` to ensure that `brew` commands used are those in
  the same branch rather than always from `origin/master`
- Don't check for an existing branch but instead force-push to it if
  there's any updates.
- Provide sample `brew typecheck` command that can be used.

Remove usages of HOMEBREW_INSTALL_BUNDLER_GEMS_FIRST

dev-cmd/pr-pull: fail on syntax errors.

test/utils/repology_spec: mark as `:needs_network`

test/utils/spdx_spec: don't error if test is skipped

language/java: check installed openjdk version instead of latest version

This logic was pulled over from `brew pull` where it made sense (as we
wanted to be able to pull broken commits) but doesn't really apply here
where we can easily end up ignoring broken formulae and pushing their
commits anyway.

build(deps): bump codecov from 0.2.7 to 0.2.8 in /Library/Homebrew

Call `clear_available_cache` after installing Git.

Bumps [codecov](https://github.com/codecov/codecov-ruby) from 0.2.7 to 0.2.8.
- [Release notes](https://github.com/codecov/codecov-ruby/releases)
- [Changelog](https://github.com/codecov/codecov-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-ruby/compare/v0.2.7...v0.2.8

)

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

Remove `os/linux/diagnostic`.

Move `command_help_lines` into `Help` module.

Refactor and document `Svn`.

Refactor and document `Git`.

sorbet: update RBI files using Tapioca.

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

Refactor and document `Bottles`.

Refactor and document `Inreplace`.

Refactor and document `Help`.

Refactor and document `Hardware`.

Refactor and document `SystemConfig`.

sorbet: update RBI files using Tapioca.

workflows/tapioca: reset earlier