lower deps for testing

pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
-requires=['setuptools>=68.0', 'numpy>=1.25,<2.0.0', 'scipy>=1.12', 'cykhash>=2.0,<3.0', 'Cython>=3.0,<3.1', 'scikit-learn>=1.3', 'hmmlearn>=0.3.2']
+requires=['setuptools>=63.0', 'numpy>=1.25,<2.0.0', 'scipy>=1.11.1', 'cykhash>=2.0,<3.0', 'Cython>=0.29.37', 'scikit-learn>=1.3', 'hmmlearn>=0.3.2']
 

requirements.txt

@@ -1,8 +1,8 @@
-Cython>=3.0,<3.1
+Cython>=0.29.37
 numpy>=1.25,<2.0.0
-scipy>=1.12
+scipy>=1.11.1
 scikit-learn>=1.3
 hmmlearn>=0.3.2
 cykhash>=2.0,<3.0 
 pytest>=7.0
-setuptools>=68.0
+setuptools>=63.0

setup.py

@@ -38,10 +38,10 @@
               'Programming Language :: Cython', ]
 
 install_requires = [ "numpy>=1.25,<2.0.0",
-                     "scipy>=1.12",
+                     "scipy>=1.11.1",
                      "hmmlearn>=0.3.2",
                      "scikit-learn>=1.3",
-                     "cykhash>=2.0,<3.0"]
+                     "cykhash>=0.29.37"]