Bump requirements.txt to newest version of pyjwt

vimalloc · vimalloc · commit 2cc6a1d763fd · 2017-05-08T08:31:21.000-06:00
diff --git a/requirements.txt b/requirements.txt
@@ -12,7 +12,7 @@ MarkupSafe==0.23
 pluggy==0.3.1
 py==1.4.31
 Pygments==2.1.3
-PyJWT==1.4.2
+PyJWT==1.5.0
 pytz==2016.7
 six==1.10.0
 snowballstemmer==1.2.1
