build: bump html-pipeline from 2.12.2 to 2.12.3 in /docs

Bumps [html-pipeline](https://github.com/jch/html-pipeline) from 2.12.2 to 2.12.3.
- [Release notes](https://github.com/jch/html-pipeline/releases)
- [Changelog](https://github.com/jch/html-pipeline/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jch/html-pipeline/compare/v2.12.2...v2.12.3

)

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

Add python@3.8 handling to virtualenv_install_with_resources

uses_from_macos: remove before/after.

We're not actually using this anywhere and it makes the code
more complicated.

Relatedly, this PR fixes the issue where
`uses_from_macos "python@2" => :build` was valid on macOS but not
on Linux.

build: bump rubocop from 0.77.0 to 0.78.0 in /Library/Homebrew

Merge remote-tracking branch 'origin/dependabot/bundler/Library/Homebrew/activesupport-6.0.2.1' into dependabot/bundler/Library/Homebrew/rubocop-0.78.0

build: bump activesupport from 6.0.2 to 6.0.2.1 in /docs

Add `garden` to root execution allow list for Concourse CI containers

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.77.0 to 0.78.0.
- [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/v0.77.0...v0.78.0

)

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

git rm .github/issue-close-app.yml

- We decided to disable this bot earlier this year, so we don't need the
  configs any more.

Bumps [activesupport](https://github.com/rails/rails) from 6.0.2 to 6.0.2.1.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.2.1/activesupport/CHANGELOG.md)
- [Commits](https://github.com/rails/rails/compare/v6.0.2...v6.0.2.1

)

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

Bumps [activesupport](https://github.com/rails/rails) from 6.0.2 to 6.0.2.1.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.2.1/activesupport/CHANGELOG.md)
- [Commits](https://github.com/rails/rails/compare/v6.0.2...v6.0.2.1

)

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

ARGV: Replace usages of ARGV.named with Homebrew.args.named

Add Vale linting for our docs

- Without this, `brew man` produces a lowercasing diff that violates
  Vale's rules.
- Also run `brew man` to test this out, and that updated some dates to
  December.

- So that people know when the docs they've written violate our style
  guides.

- This is a bit of a cheat to get around the titlecase lint. But I
  wasn't sure whether to ignore it or not. And there've been previous
  comments about making filenames match titles, so...

- This clears up the final four title-case "Pull Request" in titles,
  which are correct.

- I wrote about the implications of (not) doing this in the PR
  (https://github.com/Homebrew/brew/pull/6826#issuecomment-564273209),
  but in summary:

  - It looks like pretty much the only place we've ever adhered to the
    sentence case rule is the Prose Guidelines itself.
  - Correcting all these to sentence case would be a lot of work (and
    sometimes not even make sense).
  - Admittedly, some of the title case ones look a bit horrible, but
    even with some allowed exceptions, but it's better than being
    consistently inconsistent.
  - Only lint for title case in h1 headings. H2s and H3s etc. can be
    sentence case. There's not currently a lint for that.

- For some reason, the documented way of disabling a style for a
  specific section of Markdown text[1] didn't work for disabling the
  pronoun lint here. This is about the only place we have a legitimate
  need for it. Instead, sadly, squash this linting error by using his
  name.
- Also adjust the sentence for further clarity in light of this.

[1] - https://errata-ai.github.io/vale/config/#ignoring-parts-of-your-documents

- Without this, vale won't correctly detect where the styles are.

- 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

- Concourse CI uses `garden` under the hood for its containers.
- Running the Homebrew Docker container for a Concourse job was failing
  with the "can't run as root" error. In the same way as
  bc320ad2, this adds `garden` as one of
  the allowed providers.

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.