xarray dependency requirement for python >=3.10 should be `">=2025.03"`

[phackstock]

The current requirement for xarray is as follows:

scmdata/pyproject.toml

Lines 42 to 45 in edf9b62

	xarray = [
	{ version = "*", python = ">=3.10" },
	{ version = "<=2025.03", python = ">=3.9,<3.10" },
	]

for python versions 3.10 and later the requirement should be xarray >= 2025.03