Merge pull request #93 from python-hyper/requires-io-master

[requires.io] dependency update on master branch

Author: wsanchez

tox.ini

@@ -34,7 +34,7 @@ deps =
     test: idna==2.8
     test: typing==3.7.4.1
     test: {py26,py27,py34}: pytest==4.6.6
-    test: {py35,py36,py37,py38}: pytest==5.2.2
+    test: {py35,py36,py37,py38}: pytest==5.2.4
     test: pytest-cov==2.8.1
 
 passenv =