Upgrade systemjs to 3.1.6 (from 3.1.2)

Author: bdukes

package.json

@@ -69,7 +69,7 @@
     "select2": "4.0.6",
     "spectrum-colorpicker": "1.8.0",
     "swiper": "4.5.0",
-    "systemjs": "3.1.2",
+    "systemjs": "3.1.6",
     "tableexport": "5.2.0",
     "tinymce": "5.0.3",
     "tota11y": "0.1.6",

yarn.lock

@@ -5505,10 +5505,10 @@ symbol-observable@1.0.1:
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.1.tgz#8340fc4702c3122df5d22288f88283f513d3fdd4"
   integrity sha1-g0D8RwLDEi310iKI+IKD9RPT/dQ=
 
-systemjs@3.1.2:
-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/systemjs/-/systemjs-3.1.2.tgz#f75445af42bcdc97d225e8a3f3b1830874c1d615"
-  integrity sha512-W4M4aybLxyL2g90dvQGYapuWBYPNDdGjd5ZjtPPu89iR9Zk6AK6F2BRt82l8DoFZzBRq8QBBIn6UHu57BrmSFA==
+systemjs@3.1.6:
+  version "3.1.6"
+  resolved "https://registry.yarnpkg.com/systemjs/-/systemjs-3.1.6.tgz#0a13f45d2c3f7509824be46033a61115eda1903d"
+  integrity sha512-cXin4Z7FWf/eANmvuR5uE8qfPqMlkjyNZbayO/Mf3+AvSOegYY/3myiWgioKLOWUeB16if3VYqdk7HXXmgOL8Q==
 
 tableexport@5.2.0:
   version "5.2.0"