Bump Documenter to v1.11.3

[mortenpi]

Fix #58404 (comment), x-ref: JuliaDocs/Documenter.jl#2722

cc @vtjnash

[inkydragon]

LGTM

[IanButterworth]

Seems like this might still have problems?
https://buildkite.com/julialang/julia-master/builds/47565#0196d414-fd22-4ea3-9b17-09ae92598447/855-1165

┌ Error: Failed to push:
--
  | │   exception =
  | │    MethodError: no method matching postprocess_before_push(::Versions; subfolder::String, devurl::String, deploy_dir::String, dirname::String)
  | │    The function `postprocess_before_push` exists, but no method is defined for this combination of argument types.
  | │
  | │    Closest candidates are:
  | │      postprocess_before_push(::Nothing; subfolder, devurl, deploy_dir, dirname)
  | │       @ Documenter /cache/build/builder-amdci5-4/julialang/julia-master/doc/deps/packages/Documenter/N1Yg1/src/deploydocs.jl:525
  | │      postprocess_before_push(::AbstractVector; subfolder, devurl, deploy_dir, dirname)
  | │       @ Documenter /cache/build/builder-amdci5-4/julialang/julia-master/doc/deps/packages/Documenter/N1Yg1/src/deploydocs.jl:532
  | │
  | │    Stacktrace:
  | │      [1] (::Documenter.var"#git_commands#122"{String, String, SubString{String}, Nothing, String, Versions, Bool, String, String, String})(sshconfig::Nothing)
  | │        @ Documenter /cache/build/builder-amdci5-4/julialang/julia-master/doc/deps/packages/Documenter/N1Yg1/src/deploydocs.jl:428
  | │      [2] (::Documenter.var"#git_commands#122"{String, String, SubString{String}, Nothing, String, Versions, Bool, String, String, String})()
  | │        @ Documenter /cache/build/builder-amdci5-4/julialang/julia-master/doc/deps/packages/Documenter/N1Yg1/src/deploydocs.jl:382
  | │      [3] withenv(::Documenter.var"#git_commands#122"{String, String, SubString{String}, Nothing, String, Versions, Bool, String, String, String}, ::Pair{String, Nothing}, ::Vararg{Pair{String, Nothing}})
  | │        @ Base ./env.jl:265
  | │      [4] #129
  | │        @ /cache/build/builder-amdci5-4/julialang/julia-master/doc/deps/packages/Documenter/N1Yg1/src/deploydocs.jl:509 [inlined]
  | │      [5] cd(f::Documenter.var"#129#130", dir::String)
  | │        @ Base.Filesystem ./file.jl:112
  | │      [6] git_push(root::String, temp::String, repo::String; branch::String, dirname::String, target::String, sha::SubString{String}, cname::Nothing, devurl::String, versions::Versions, forcepush::Bool, deploy_config::BuildBotConfig, subfolder::String, is_preview::Bool, archive::String)
  | │        @ Documenter /cache/build/builder-amdci5-4/julialang/julia-master/doc/deps/packages/Documenter/N1Yg1/src/deploydocs.jl:509
  | │      [7] (::Documenter.var"#112#113"{SubString{String}, String, String, String, String, Nothing, String, Versions, Bool, BuildBotConfig, String, Bool, String})(temp::String)
  | │        @ Documenter /cache/build/builder-amdci5-4/julialang/julia-master/doc/deps/packages/Documenter/N1Yg1/src/deploydocs.jl:303
  | │      [8] mktempdir(fn::Documenter.var"#112#113"{SubString{String}, String, String, String, String, Nothing, String, Versions, Bool, BuildBotConfig, String, Bool, String}, parent::String; prefix::String)

[mortenpi]

Hopefully will be properly fixed with #58431