Backport to 1.12: bump Documenter to 1.16.1#60217

ViralBShah merged 1 commit intobackports-release-1.12JuliaLang/julia:backports-release-1.12from

mh/backport-documenter-1.16.1-update-1.12JuliaLang/julia:mh/backport-documenter-1.16.1-update-1.12Copy head branch name to clipboard