chore: Update to Ruby v3.3 and jekyll v4.3#2364

matthewfeickert wants to merge 7 commits intomasteriris-hep/iris-hep.github.io:masterfrom

chore/update-to-ruby-3-3iris-hep/iris-hep.github.io:chore/update-to-ruby-3-3Copy head branch name to clipboard