Bump rack from 2.2.6.2 to 2.2.6.4#299

dependabot[bot] wants to merge 1 commit intomaingenebean/tree-planter:mainfrom

dependabot/bundler/rack-2.2.6.4genebean/tree-planter:dependabot/bundler/rack-2.2.6.4Copy head branch name to clipboard