Update pytest from 3.7.3 to 3.8.0 (#130)

pyup-bot · Kimberly Sereduck · commit faf3bed1dc24 · 2018-09-06T13:35:06.000-06:00
diff --git a/axe_selenium_python/tests/requirements/tests.txt b/axe_selenium_python/tests/requirements/tests.txt
@@ -1,3 +1,3 @@
-pytest==3.7.3
+pytest==3.8.0
 selenium==3.14.0
 pytest-html==1.19.0
