I suspect some of your packages are holding it back
]status to see what version of Parquet.jl you have. i suspect something like Feather.jl is holding you back from getting the latest version of Parquet.jl
Remove Feather.jl first like ]rm Feather.
Now, also if you only want to use the data from Julia and not worry about future breaking changes you can try JDF.jl which saves the data quite quickly.