change pyproject since bug in the ci

pyproject.toml

@@ -34,14 +34,14 @@ classifiers = [
         #   3 - Alpha
         #   4 - Beta
         #   5 - Production/Stable
-        "Development Status :: 4 - Alpha",
+        "Development Status :: 4 - Beta",
         # Indicate who your project is intended for
         "Intended Audience :: Science/Research",
         # Pick your license as you wish (should match "license" above)
         "License :: OSI Approved :: MIT License",
         # Specify the Python versions you support here. In particular, ensure
         # that you indicate whether you support Python 2, Python 3 or both.
-        "Programming Language :: Python :: 3 :: Only",
+        "Programming Language :: Python",
 ]
 dependencies = [
 "matplotlib",