Update yarn lockfile

yarn.lock

@@ -262,13 +262,6 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-2.0.2.tgz#857a118d8634c84bba7ae14088e4508490cd5da5"
   integrity sha512-4kPlzbljFcsttWEq6aBW0OZe6BDajAmyvr2xknBG92tejQnvdGtT9+kXSZ580DqpxY9qG2xeQVF9Dq0ymUTo5Q==
 
-"@types/mmmagic@^0.4.29":
-  version "0.4.29"
-  resolved "https://registry.yarnpkg.com/@types/mmmagic/-/mmmagic-0.4.29.tgz#d33bba3bcc596233fbf73747935b4dfe6866f227"
-  integrity sha1-0zu6O8xZYjP79zdHk1tN/mhm8ic=
-  dependencies:
-    "@types/node" "*"
-
 "@types/mocha@^5.1.0":
   version "5.2.7"
   resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-5.2.7.tgz#315d570ccb56c53452ff8638738df60726d5b6ea"
@@ -1779,13 +1772,6 @@ mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.1:
   dependencies:
     minimist "^1.2.5"
 
-mmmagic@^0.5.3:
-  version "0.5.3"
-  resolved "https://registry.yarnpkg.com/mmmagic/-/mmmagic-0.5.3.tgz#a28feb0cf85632fd6a1e233e4a584990ae0d7302"
-  integrity sha512-xLqCu7GJYTzJczg0jafXFuh+iPzQL/ru0YYf4GiTTz8Cehru/wiXtUS8Pp8Xi77zNaiVndJ0OO1yAFci6iHyFg==
-  dependencies:
-    nan "^2.13.2"
-
 mocha-junit-reporter@^1.17.0:
   version "1.23.3"
   resolved "https://registry.yarnpkg.com/mocha-junit-reporter/-/mocha-junit-reporter-1.23.3.tgz#941e219dd759ed732f8641e165918aa8b167c981"
@@ -1855,11 +1841,6 @@ mv@~2:
     ncp "~2.0.0"
     rimraf "~2.4.0"
 
-nan@^2.13.2:
-  version "2.18.0"
-  resolved "https://registry.yarnpkg.com/nan/-/nan-2.18.0.tgz#26a6faae7ffbeb293a39660e88a76b82e30b7554"
-  integrity sha512-W7tfG7vMOGtD30sHoZSSc/JVYiyDPEyQVso/Zz+/uQd0B0L46gtC+pHha5FFMRpil6fm/AoEcRWyOVi4+E/f8w==
-
 nan@^2.14.0:
   version "2.14.1"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.1.tgz#d7be34dfa3105b91494c3147089315eff8874b01"