Bump webpack from 4.30.0 to 4.31.0

Bumps [webpack](https://github.com/webpack/webpack) from 4.30.0 to 4.31.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.30.0...v4.31.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package-lock.json

@@ -1372,11 +1372,12 @@
       }
     },
     "assert": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/assert/-/assert-1.4.1.tgz",
-      "integrity": "sha1-mZEtWRg2tab1s0XA8H7vwI/GXZE=",
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/assert/-/assert-1.5.0.tgz",
+      "integrity": "sha512-EDsgawzwoun2CZkCgtxJbv392v4nbk9XDD06zI+kQYoBM/3RBWLlEyJARDOmhAAosBjWACEkKL6S+lIZtcAubA==",
       "dev": true,
       "requires": {
+        "object-assign": "^4.1.1",
         "util": "0.10.3"
       },
       "dependencies": {
@@ -3048,9 +3049,9 @@
       "dev": true
     },
     "fsevents": {
-      "version": "1.2.8",
-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.8.tgz",
-      "integrity": "sha512-tPvHgPGB7m40CZ68xqFGkKuzN+RnpGmSV+hgeKxhRpbxdqKXUFJGC3yonBOLzQBcJyGpdZFDfCsdOC2KFsXzeA==",
+      "version": "1.2.9",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.9.tgz",
+      "integrity": "sha512-oeyj2H3EjjonWcFjD5NvZNE9Rqe4UW+nQBU2HNeKw0koVLEFIhtyETyAakeAM3de7Z/SW5kcA+fZUait9EApnw==",
       "dev": true,
       "optional": true,
       "requires": {
@@ -4874,9 +4875,9 @@
       "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
     },
     "nan": {
-      "version": "2.12.1",
-      "resolved": "https://registry.npmjs.org/nan/-/nan-2.12.1.tgz",
-      "integrity": "sha512-JY7V6lRkStKcKTvHO5NVSQRv+RV+FIL5pvDoLiAtSL9pKlC5x9PKQcZDsq7m4FO4d57mkhC6Z+QhAh3Jdk5JFw==",
+      "version": "2.13.2",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.13.2.tgz",
+      "integrity": "sha512-TghvYc72wlMGMVMluVo9WRJc0mB8KxxF/gZ4YYFy7V2ZQX9l7rgbPg7vjS9mt6U5HXODVFVI2bOduCzwOMv/lw==",
       "dev": true,
       "optional": true
     },
@@ -7386,9 +7387,9 @@
       }
     },
     "webpack": {
-      "version": "4.30.0",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.30.0.tgz",
-      "integrity": "sha512-4hgvO2YbAFUhyTdlR4FNyt2+YaYBYHavyzjCMbZzgglo02rlKi/pcsEzwCuCpsn1ryzIl1cq/u8ArIKu8JBYMg==",
+      "version": "4.31.0",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.31.0.tgz",
+      "integrity": "sha512-n6RVO3X0LbbipoE62akME9K/JI7qYrwwufs20VvgNNpqUoH4860KkaxJTbGq5bgkVZF9FqyyTG/0WPLH3PVNJA==",
       "dev": true,
       "requires": {
         "@webassemblyjs/ast": "1.8.5",
@@ -7614,9 +7615,9 @@
       "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc="
     },
     "worker-farm": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.6.0.tgz",
-      "integrity": "sha512-6w+3tHbM87WnSWnENBUvA2pxJPLhQUg5LKwUQHq3r+XPhIM+Gh2R5ycbwPCyuGbNg+lPgdcnQUhuC02kJCvffQ==",
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.7.0.tgz",
+      "integrity": "sha512-rvw3QTZc8lAxyVrqcSGVm5yP/IJ2UcB3U0graE3LCFoZ0Yn2x4EoVSqJKdB/T5M+FLcRPjz4TDacRf3OCfNUzw==",
       "dev": true,
       "requires": {
         "errno": "~0.1.7"

package.json

@@ -75,7 +75,7 @@
     "url-loader": "^1.1.2",
     "vue-loader": "^15.6.4",
     "vue-template-compiler": "^2.6.10",
-    "webpack": "^4.30.0",
+    "webpack": "^4.31.0",
     "webpack-cli": "^3.3.2",
     "webpack-merge": "^4.2.1"
   }