remove fixed GraphMakie version for doc build

this hack should have been removed a looooong time ago.... ups

Author: hexaeder

.github/workflows/CI.yml

@@ -48,8 +48,6 @@ jobs:
       - run: |
           julia --project=docs -e '
             using Pkg
-            # XXX: temp solution to resolve deps
-            Pkg.add(url="https://github.com/JuliaPlots/GraphMakie.jl", rev="2301fbb")
             Pkg.develop(PackageSpec(path=pwd()))
             Pkg.instantiate()'
       - run: |