Bump rack from 2.2.3 to 2.2.6.4 in /Balthisar Tidy Help Project#21

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dependabot/bundler/Balthisar-Tidy-Help-Project/rack-2.2.6.4balthisar/tidy:dependabot/bundler/Balthisar-Tidy-Help-Project/rack-2.2.6.4Copy head branch name to clipboard