update pytest to 5.2.0
@@ -24,7 +24,7 @@ importlib_metadata>=0.20; python_version < "3.8"
typing_extensions>=3.7.4; python_version < "3.8"
# Development dependencies
cython>=0.25
-pytest>=4.6.5
+pytest>=5.2.0
pytest-timeout>=1.3.0,<2.0.0
mock>=2.0.0,<3.0.0
flake8>=3.5.0,<3.6.0
