CompatHelper: bump compat for AlgebraicMultigrid to 1 for package docs, (keep existing compat)

Failed in 2h 3m
📄 Build and Deploy Documentationjulia --project=docs -e ' && println("--- :julia: Instantiating project") && using Pkg && Pkg.develop(PackageSpec(path=pwd())) && Pkg.instantiate() && println("--- :julia: Building documentation") && include("docs/make.jl") && '
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Ran in 2h 3m
Total Job Run Time: 2h 3m