Loosen Numpy because of broad range of Python support required

Author: mdboom

cuda_bindings/pyproject.toml

@@ -47,8 +47,8 @@ test = [
     "cython>=3.2,<3.3",
     "setuptools>=80.0.0",
     # TODO: remove the Python 3.15 guard once 3.15 is officially supported
-    "matplotlib==3.10.9; python_version < '3.15'",
-    "numpy==2.2.6",
+    "matplotlib; python_version < '3.15'",
+    "numpy",
     "pytest==9.1.0",
     "pytest-benchmark==5.2.3",
     "pytest-repeat==0.9.4",