Add lower bound, will retag.

Author: jhale

python/pyproject.toml

@@ -45,7 +45,7 @@ docs = [
 lint = ["ruff>=0.2.0"]
 optional = ["numba", "pyamg"]
 petsc4py = ["petsc4py"]
-test = ["matplotlib", "networkx", "packaging", "pytest", "scipy", "fenics-dolfinx[optional]"]
+test = ["matplotlib", "networkx", "packaging", "pytest>=9", "scipy", "fenics-dolfinx[optional]"]
 ci = [
       "mypy",
       "pytest-xdist",