Update rack requirement from ~> 2.0, >= 2.0.6 to >= 2.0.6, < 4#2

dependabot[bot] wants to merge 4 commits into

stable/cinccinc-project/chef-zero:stable/cincfrom

dependabot/bundler/rack-gte-2.0.6-and-lt-4cinc-project/chef-zero:dependabot/bundler/rack-gte-2.0.6-and-lt-4Copy head branch name to clipboard