- I noticed that another open source project had taken the Homebrew
  style guide and made it into [Vale linting
  rules](https://github.com/testthedocs/vale-styles/tree/master/Homebrew).
  This copies them into here, so that we can make use of them. Thanks!
- What use is a style guide if our own docs don't at least try to
  adhere to it? This aims to make the rules more visible to all
  contributors.
- In order for these to do anything, you'll have to `brew install vale`
  and run `vale` in the root of this repo. It will look for Markdown
  files.
- A next step would be adding this as a pre-commit hook, or...
- The GitHub Action would have been really good, but [it doesn't support
  forks](https://github.com/errata-ai/vale-action#limitations).

build: bump thor from 0.20.3 to 1.0.1 in /Library/Homebrew

Bumps [thor](https://github.com/erikhuda/thor) from 0.20.3 to 1.0.1.
- [Release notes](https://github.com/erikhuda/thor/releases)
- [Changelog](https://github.com/erikhuda/thor/blob/master/CHANGELOG.md)
- [Commits](https://github.com/erikhuda/thor/compare/v0.20.3...v1.0.1

)

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

build: bump rubocop-rspec from 1.37.0 to 1.37.1 in /Library/Homebrew

Bumps [rubocop-rspec](https://github.com/rubocop-hq/rubocop-rspec) from 1.37.0 to 1.37.1.
- [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/v1.37.0...v1.37.1

)

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

download_strategy: use (more consistent) TypeError.

cmd/info: fix --json argument handling.

Rather than a base `RuntimeError`.

Fixes https://github.com/Homebrew/brew/issues/6839

`--all` and `--installed` do not require formulae arguments.

Fixes https://github.com/Homebrew/brew/issues/6842

cmd/dev-cmd: improve handling of invalid input

build: bump activesupport from 6.0.1 to 6.0.2 in /Library/Homebrew

Bumps [activesupport](https://github.com/rails/rails) from 6.0.1 to 6.0.2.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.2/activesupport/CHANGELOG.md)
- [Commits](https://github.com/rails/rails/compare/v6.0.1...v6.0.2

)

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

build: bump activesupport from 6.0.1 to 6.0.2 in /docs

Bumps [activesupport](https://github.com/rails/rails) from 6.0.1 to 6.0.2.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.2/activesupport/CHANGELOG.md)
- [Commits](https://github.com/rails/rails/compare/v6.0.1...v6.0.2

)

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

build: bump html-proofer from 3.14.1 to 3.15.0 in /docs

Bumps [html-proofer](https://github.com/gjtorikian/html-proofer) from 3.14.1 to 3.15.0.
- [Release notes](https://github.com/gjtorikian/html-proofer/releases)
- [Commits](https://github.com/gjtorikian/html-proofer/compare/v3.14.1...v3.15.0

)

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

build: bump json from 2.2.0 to 2.3.0 in /Library/Homebrew

Bumps [json](https://github.com/flori/json) from 2.2.0 to 2.3.0.
- [Release notes](https://github.com/flori/json/releases)
- [Changelog](https://github.com/flori/json/blob/master/CHANGES.md)
- [Commits](https://github.com/flori/json/commits

)

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

os/mac/xcode: bump Xcode/CLT versions (and cleanup)

We never care about it and it's not relevant anywhere except 10.14.

argv: move formulae to cli/args

formula: handle missing runtime dependency formulae.

This is most likely an old formula with bad dependency data so output
the path so it can be uninstalled.

cmd/leaves: handle missing formula.

Use `runtime_formula_dependencies` which does this for us.

Fixes #6827.

build: bump parallel_tests from 2.29.2 to 2.30.0 in /Library/Homebrew