Backport to 1.10: bump Documenter to 1.16.1#60218

fingolfin wants to merge 1 commit intobackports-release-1.10JuliaLang/julia:backports-release-1.10from

mh/backport-documenter-1.16.1-update-1.10JuliaLang/julia:mh/backport-documenter-1.16.1-update-1.10Copy head branch name to clipboard