build: update dependency fetch-mock to v9.4.0

Author: renovate-bot

package.json

@@ -17,7 +17,7 @@
     "babel-preset-env": "1.7.0",
     "coveralls": "3.0.11",
     "del": "5.1.0",
-    "fetch-mock": "9.3.1",
+    "fetch-mock": "9.4.0",
     "gulp": "3.9.1",
     "gulp-babel": "7.0.1",
     "gulp-rename": "2.0.0",

yarn.lock

@@ -3985,10 +3985,10 @@ fetch-ie8@^1.4.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/fetch-ie8/-/fetch-ie8-1.5.0.tgz#f1141c3f96cbc8937aa31b0fbc1a770220fbc15b"
 
-fetch-mock@9.3.1:
-  version "9.3.1"
-  resolved "https://registry.yarnpkg.com/fetch-mock/-/fetch-mock-9.3.1.tgz#39685ed6aaa833580cc4e88c8282942950b9a5d5"
-  integrity sha512-zt2QUNYuR1kVCG8vGV+awxe/dtH/ufjpu2EA08v04eAVu3Rnt1P8Df8//VJrtxIx6tAdH+NHuCkb/Z69HUOT9A==
+fetch-mock@9.4.0:
+  version "9.4.0"
+  resolved "https://registry.yarnpkg.com/fetch-mock/-/fetch-mock-9.4.0.tgz#9be073577bcfa57af714ca91f7536aff8450ec88"
+  integrity sha512-tqnFmcjYheW5Z9zOPRVY+ZXjB/QWCYtPiOrYGEsPgKfpGHco97eaaj7Rv9MjK7PVWG4rWfv6t2IgQAzDQizBZA==
   dependencies:
     babel-runtime "^6.26.0"
     core-js "^3.0.0"