super/cc: fix -mmacosx-version-min on Mojave.

Remove some `#popen_read`s.

Use JSON to marshal errors from children

Replaces our serialization of child process
errors via Marshal with JSON, preventing
unintentional or malicious code execution outside
of the build sandbox.

Additionally, adds tests for the new behavior.

It fails to accept any version < 10.6.

Deprecate `gpg` stanza.

Merge pull request #4805 from Homebrew/dependabot/bundler/Library/Homebrew/test/parallel_tests-2.22.1

Bump parallel_tests from 2.22.0 to 2.22.1 in /Library/Homebrew/test

os/mac: note installation docs need bumped too.

I noticed these contain a reference to our supported versions so should
be bumped whenever this version is bumped.

Bumps [parallel_tests](https://github.com/grosser/parallel_tests) from 2.22.0 to 2.22.1.
- [Release notes](https://github.com/grosser/parallel_tests/releases)
- [Commits](https://github.com/grosser/parallel_tests/compare/v2.22.0...v2.22.1

)

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

formulary: NameError makes formulae unreadable.

And `NoMethodError` is a type of `NameError`.

.rubocop: tweak rules.

Revert "Add `$LOAD_PATH` for RuboCop cops."

Adjust the rules based on the current codebase. Remove various enable,
disables and default values that are unnecessary. Add more comments
explaining why. Make minor changes needed to enable a few more rules.

tests: handle file leaks and SVN test prompt.

Improve Homebrew/brew line length.

Use 124 max line length everywhere. Also, reduce tap max line length to
189 as Homebrew/homebrew-core has that as a maximum now. In future
Homebrew/homebrew-core will also be reduced to 124 maximum line length.

- Ignore files that are generated by `brew tests`
- Make the SVN tests work without prompting for GitHub's SSL certificate

tests: set HOME.

This is the only way to override the user's Git configuration which can
break tests when e.g. `gpg` cannot be found but signing is requested.

cleanup: fix go_cache cleanup

Fix `CurlApacheMirrorDownloadStrategy` URL resolution.

Avoid network call in `#initialize`.

Skip migration if cache is empty or doesn’t exist.

quarantine: do not automatically follow symlinks

Only migrate cache files containing `--`.

Skip `mtime` for non-existent symlink.

Resolve URL to get real file extension.

[Security] Bump rubyzip from 1.2.1 to 1.2.2 in /docs