Raise seekpath upper version pin (#656)

Author: ajjackson

pyproject.toml

@@ -34,7 +34,7 @@ dependencies = [
     "pymatgen>=2025.1.24",
     "pyyaml<7.0.0,>=6.0.1",
     "rich<14.0.0,>=13.9.1",
-    "seekpath<2.0.0,>=1.9.7",
+    "seekpath<3.0.0,>=1.9.7",
     "spglib<3.0.0,>=2.3.0",
     "typer<1.0.0,>=0.19.1",
     "typer-config<2.0.0,>=1.4.2",