Fix failing unit tests

src/core/input.jl

src/crop/cropmodels.jl

src/parameters.toml

test/crop_tests.jl

test/cropparams-almass/crop_data_general.csv

test/cropparams-almass/crop_growth_curves.csv

test/io_tests.jl

test/runtests.jl

test/simulation_tests.jl

test/test_parameters.toml

test/test_parameters_almass.toml

test/test_parameters_simplecrop.toml