Bump rack from 2.1.2 to 2.2.2 (#13108)

Bumps [rack](https://github.com/rack/rack) from 2.1.2 to 2.2.2.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rack/rack/compare/2.1.2...v2.2.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
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dependabot-preview[bot] 2020-02-20 09:24:16 +09:00 committed by GitHub
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commit 89a9eeb675
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2 changed files with 3 additions and 3 deletions

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@ -9,7 +9,7 @@ gem 'puma', '~> 4.3'
gem 'rails', '~> 5.2.4'
gem 'sprockets', '~> 3.7.2'
gem 'thor', '~> 0.20'
gem 'rack', '~> 2.1.2'
gem 'rack', '~> 2.2.2'
gem 'thwait', '~> 0.1.0'
gem 'e2mmap', '~> 0.1.0'