[requires.io] dependency update

requires · requires · commit 877ebc27affb · 2018-02-27T11:06:19.000Z
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -1,5 +1,5 @@
 pytest==3.4.1
 pytest-cov==2.5.1
 coverage==4.5.1
-pytest-xdist==1.22.1
+pytest-xdist==1.22.2
 hypothesis
