Pin numpy required version to 1.x.x

Numpy 2.0 will release in a few months time and we don't know how that
will affect us. Until there is a release candidate for numpy 2.0 we
should set a 1.x.x as an strict requirement. See [1].

[1] numpy/numpy#24300

python/setup.py

@@ -36,7 +36,7 @@ def get_long_description():
     packages = ['dlisio', 'dlisio.dlis', 'dlisio.lis', 'dlisio.common', 'dlisio.dlis.utils'],
     license = 'LGPL-3.0',
     platforms = 'any',
-    install_requires = ['numpy'],
+    install_requires = ['numpy < 2.0'],
     setup_requires = ['setuptools >= 28',
                       'pybind11 >= 2.3',
                       'setuptools_scm',