Require numpy less than 2

As recommended in numpy/numpy#24300 it is set
to less than 2 due to upcoming breaking changes.

setup.py

@@ -28,7 +28,7 @@ def get_long_description() -> str:
     package_dir={"": "src"},
     packages=find_packages(where="src"),
     install_requires=[
-        "numpy",
+        "numpy<2",
         "scipy",
         "pyyaml",
         "pandas",