fix lockfile

Author: mkg0

yarn.lock

@@ -3014,7 +3014,7 @@ [email protected], "mkdirp@>=0.5 0", mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.0, mkd
   dependencies:
     minimist "0.0.8"
 
-moment@^2.10.6:
+moment@^2.19.4:
   version "2.20.1"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.20.1.tgz#d6eb1a46cbcc14a2b2f9434112c1ff8907f313fd"