To enable testing in python 3.9 we need numpy. Also going to the current minimal supported version

Author: timsaucer

pyproject.toml

@@ -148,7 +148,7 @@ max-doc-length = 88
 [dependency-groups]
 dev = [
     "maturin>=1.8.1",
-    "numpy>1.24.4 ; python_full_version >= '3.10'",
+    "numpy>1.25.0",
     "pytest>=7.4.4",
     "ruff>=0.9.1",
     "toml>=0.10.2",