Update dependencies

Author: anttiai

package.json

@@ -41,16 +41,16 @@
   },
   "devDependencies": {
     "@babel/cli": "^7.8.4",
-    "@babel/core": "^7.8.4",
-    "@babel/preset-env": "^7.8.4",
-    "@babel/register": "^7.7.7",
+    "@babel/core": "^7.8.6",
+    "@babel/preset-env": "^7.8.6",
+    "@babel/register": "^7.8.6",
     "babel-loader": "^8.0.6",
     "esm": "^3.2.25",
-    "fetch-mock": "^8.3.2",
-    "mocha": "^6.2.2",
+    "fetch-mock": "^9.0.0",
+    "mocha": "^7.1.0",
     "node-fetch": "^2.6.0",
-    "uglify-js": "^3.7.7",
-    "webpack": "^4.41.5",
-    "webpack-cli": "^3.3.10"
+    "uglify-js": "^3.8.0",
+    "webpack": "^4.42.0",
+    "webpack-cli": "^3.3.11"
   }
 }