Update jekyll requirement from ~> 3.3 to >= 3.3, < 5.0#1

dependabot[bot] wants to merge 1 commit intomasterstats385/stats385.github.io:masterfrom

dependabot/bundler/jekyll-gte-3.3-and-lt-5.0stats385/stats385.github.io:dependabot/bundler/jekyll-gte-3.3-and-lt-5.0Copy head branch name to clipboard