add another 512 mb memory
add another 512 mb memory

hopefully reduce the frequency of linker failures for CoinOptServices
JuliaCI/PackageEvaluator.jl,ScottPJones/PackageEvaluator.jl,Jeblist/PackageEvaluator.jl,IainNZ/PackageEvaluator.jl,Jeblist/PackageEvaluator.jl,JuliaCI/PackageEvaluator.jl,phobon/PackageEvaluator.jl,IainNZ/PackageEvaluator.jl,ScottPJones/PackageEvaluator.jl,ScottPJones/PackageEvaluator.jl,IainNZ/PackageEvaluator.jl,jiahao/PackageEvaluator.jl,JuliaCI/PackageEvaluator.jl,jiahao/PackageEvaluator.jl,jiahao/PackageEvaluator.jl,phobon/PackageEvaluator.jl