Update rack requirement from ~> 1.5.2 to >= 1.5.2, < 2.3.0#6

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dependabot/bundler/rack-gte-1.5.2-and-lt-2.3.0portly/pairish:dependabot/bundler/rack-gte-1.5.2-and-lt-2.3.0Copy head branch name to clipboard