Pin markupsafe to latest version 0.23

pyup-bot · vrutkovs · commit 6f422f36b9ed · 2017-02-11T18:12:13.000+01:00
diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,4 @@
 ansible==2.2.1.0
 behave>=1.2.5
-markupsafe
+markupsafe==0.23
 six>=1.9.0
