Needed due to https://github.com/Homebrew/homebrew-test-bot/pull/538

Bumps [html-proofer](https://github.com/gjtorikian/html-proofer) from 3.17.4 to 3.18.0.
- [Release notes](https://github.com/gjtorikian/html-proofer/releases)
- [Commits](https://github.com/gjtorikian/html-proofer/compare/v3.17.4...v3.18.0

)

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

This allows customisation of how often the periodic cleanups are done.

Bumps [html-proofer](https://github.com/gjtorikian/html-proofer) from 3.17.3 to 3.17.4.
- [Release notes](https://github.com/gjtorikian/html-proofer/releases)
- [Commits](https://github.com/gjtorikian/html-proofer/compare/v3.17.3...v3.17.4

)

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

Co-authored-by: Eric Knibbe <enk3@outlook.com>

Bumps [html-proofer](https://github.com/gjtorikian/html-proofer) from 3.17.1 to 3.17.3.
- [Release notes](https://github.com/gjtorikian/html-proofer/releases)
- [Commits](https://github.com/gjtorikian/html-proofer/compare/v3.17.1...v3.17.3

)

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

Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>

The other syntax for setting `ENV` was added in #9013,
but this form remained undocumented.

Fixes #8648.

Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>

Add a new command to list formulae that aren't bottled for a given OS.

- `brew uninstall --zap` replaces `brew cask zap`
- clarify how `--json` should behave

Fixes https://github.com/Homebrew/brew/issues/9296

This behaviour is disabled.

Co-authored-by: Issy Long <issyl0@github.com>