remove ordered dict deprecated use

[jd-lara]

It looks like the code for the partitions is using a deprecated method for ordered dicts

test_simulation_partitions: ┌ Warning: Overwriting ThermalStandard existing model
└ @ PowerSimulations ~/.julia/dev/PowerSimulations/src/core/device_model.jl:87
┌ Warning: Overwriting ThermalStandard existing model
└ @ PowerSimulations ~/.julia/dev/PowerSimulations/src/core/device_model.jl:87
┌ Warning: Conversion to OrderedDict is deprecated for unordered associative containers (in this case, Dict{Int64, Int64}). Use an ordered or sorted associative type, such as SortedDict and OrderedDict.
│   caller = convert(#unused#::Type{OrderedDict{Int64, OrderedDict{Int64, Int64}}}, d::OrderedDict{Int64, Dict{Int64, Int64}}) at ordered_dict.jl:103
└ @ OrderedCollections ~/.julia/packages/OrderedCollections/PRayh/src/ordered_dict.jl:103