Co-Authored-By: MikeMcQuaid <mike@mikemcquaid.com>

Bumps [rubocop-rspec](https://github.com/rubocop-hq/rubocop-rspec) and [rubocop](https://github.com/rubocop-hq/rubocop). These dependencies needed to be updated together.

Updates `rubocop-rspec` from 1.30.0 to 1.30.1
- [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/v1.30.0...v1.30.1)

Updates `rubocop` from 0.59.1 to 0.60.0
- [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/v0.59.1...v0.60.0

)

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

1.1.0 was yanked from Rubygems: https://rubygems.org/gems/concurrent-ruby/versions

This reverts commit ab372d0e.

Bumps [concurrent-ruby](https://github.com/ruby-concurrency/concurrent-ruby) from 1.0.5 to 1.1.0.
- [Release notes](https://github.com/ruby-concurrency/concurrent-ruby/releases)
- [Changelog](https://github.com/ruby-concurrency/concurrent-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ruby-concurrency/concurrent-ruby/compare/v1.0.5...v1.1.0

)

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

This issue causes method in a Nil object to be read when a mirror download fails. In my case, this occurs due to my office's proxy blocking certain mirrors. This patch fixes the Nil access, exposing a more helpful error message.

## Before patch
```
$ brew install maven
Error: An exception occurred within a child process:
  NoMethodError: undefined method `unlock' for nil:NilClass
```

## After patch
```
$ brew install maven
Error: An exception occurred within a child process:
  DownloadError: Failed to download resource "maven"
Download failed: Couldn't determine mirror, try again later.
```

## Steps to reproduce
1.  Use brew 1.8.0
2.  Ensure maven is not installed:
    ```
    brew remove maven
    ```
3.  Ensure the download is not cached:
    ```
    rm "$HOME/Library/Caches/Homebrew/downloads/*--apache-maven-*-bin.tar.gz"
    ```
4.  Make the mirrors unreachable by pointing them at a nonfunctional proxy:
    ```
    export http{,s}_proxy=http://localhost:8080
    export no_proxy=*.github.com,*.brew.sh
    ```
5.  Attempt package installation
    ```
    brew install maven
    ```

Bumps [parallel_tests](https://github.com/grosser/parallel_tests) from 2.26.0 to 2.26.2.
- [Release notes](https://github.com/grosser/parallel_tests/releases)
- [Commits](https://github.com/grosser/parallel_tests/compare/v2.26.0...v2.26.2

)

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

Bumps [parser](https://github.com/whitequark/parser) from 2.5.1.2 to 2.5.3.0.
- [Release notes](https://github.com/whitequark/parser/releases)
- [Changelog](https://github.com/whitequark/parser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/whitequark/parser/compare/v2.5.1.2...v2.5.3.0

)

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

Set HOMEBREW_FORCE_BREWED_CURL or HOMEBREW_FORCE_BREWED_GIT if the system-provided versions are missing or outdated, causing either to be installed on the next `brew update`.

Also print the path to put files into if no build system was
determined.

Note that the `HOMEBREW_FORCE_BREWED_` vars are automatically set if the system `git` and `curl` are too old. Drop mention of `HOMEBREW_GIT` which isn't user-settable.

Ensures `system` and `safe_system` use brewed git if available.

Bumps [parallel_tests](https://github.com/grosser/parallel_tests) from 2.25.0 to 2.26.0.
- [Release notes](https://github.com/grosser/parallel_tests/releases)
- [Commits](https://github.com/grosser/parallel_tests/compare/v2.25.0...v2.26.0

)

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

which("svn") detects shims/scm/svn even when svn is not installed.

Bumps [parallel_tests](https://github.com/grosser/parallel_tests) from 2.24.0 to 2.25.0.
- [Release notes](https://github.com/grosser/parallel_tests/releases)
- [Commits](https://github.com/grosser/parallel_tests/compare/v2.24.0...v2.25.0

)

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

These are an invalid argument on macOS but still need to be handled.

- remove odisabled
- move odeprecated to odisabled