Merge pull request #58 from espdev/dependabot/pip/sphinx-gte-3.0.0-an…

…d-lt-6

Update sphinx requirement from <5,>=3.0.0 to >=3.0.0,<6

setup.py

@@ -33,7 +33,7 @@ def _get_long_description():
         'scipy >=1.0.0, <2',
     ],
     extras_require={
-        'docs': ['sphinx >=3.0.0, <5', 'matplotlib >=3.1', 'numpydoc', 'm2r2'],
+        'docs': ['sphinx >=3.0.0, <6', 'matplotlib >=3.1', 'numpydoc', 'm2r2'],
         'tests': ['pytest', 'coverage <7', 'pytest-cov', 'coveralls'],
     },
     package_data={"csaps": ["py.typed"]},