Use pip>=19.2.1 in the requirements

mdmintz · mdmintz · commit 9c589de26475 · 2019-07-25T00:33:53.000-04:00
diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,4 @@
-pip>=19.1.1
+pip>=19.2.1
 setuptools>=41.0.1
 wheel>=0.33.4
 six
