adjust dependency floors

Author: orbeckst

pyproject.toml

@@ -7,11 +7,12 @@ license = "MIT"
 
 [tool.poetry.dependencies]
 python = ">=3.10,<3.15"
-numpy = ">=1.21.4,<3"
-pandas = "^2.2.3"
-scipy = "^1.11"
-networkx = "^3.2"
-xarray = "^2024.1"
+# Dependency floors: see PyPI requires_python / classifiers for 3.10–3.14 (pandas 2.3.3+ for 3.14; scipy ≥1.11.4 for 3.13+).
+numpy = ">=1.22.4,<3"
+pandas = ">=2.3.3,<3"
+scipy = ">=1.11.4,<2"
+networkx = ">=3.2,<4"
+xarray = ">=2024.1"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.0"