Update setuptools from 38.4.0 to 38.5.1 (#7501)

requirements/system.txt

@@ -118,9 +118,9 @@ pyparsing==2.2.0 \
     --hash=sha256:8f1e18d3fd36c6795bb7e02a39fd05c611ffc2596c1e0d995d34d67630426c18 \
     --hash=sha256:e4d45427c6e20a59bf4f88c639dcc03ce30d193112047f94012102f235853a58
 # setuptools is required by cryptography, ipdb, ipython, spidermonkey, yolk
-setuptools==38.4.0 \
-    --hash=sha256:155c2ec9fdcc00c3973d966b416e1cf3a1e7ce75f4c09fb760b23f94b935926e \
-    --hash=sha256:6501fc32f505ec5b3ed36ec65ba48f1b975f52cf2ea101c7b73a08583fd12f75
+setuptools==38.5.1 \
+    --hash=sha256:7ffe771abfae419fd104f93400b61c935b5af10bfe4dfeec7a1bd495694eea35 \
+    --hash=sha256:6425484c08e99a98a42209c25c3d325f749230b55284d66192784f941a7e6628
 # six is required by Sphinx, bleach, cryptography, django-environ, django-extensions, django-tables2, docker-compose, docker-py, docker-pycreds, dockerpty, elasticsearch-dsl, html5lib, mock, nobot, packaging, pathlib2, prompt-toolkit, pyOpenSSL, sphinxcontrib-httpdomain, websocket-client
 six==1.11.0 \
     --hash=sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb \