[requires.io] dependency update

requires · requires · commit 6834696b2a9e · 2018-03-06T14:35:35.000+09:00
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -1,4 +1,4 @@
-pytest==3.4.1
+pytest==3.4.2
 pytest-cov==2.5.1
 pytest-xdist==1.22.2
 hypothesis
