Bump webpack-cli from 3.3.7 to 3.3.8 in /js

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 3.3.7 to 3.3.8.
- [Release notes](https://github.com/webpack/webpack-cli/releases)
- [Changelog](https://github.com/webpack/webpack-cli/blob/v3.3.8/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-cli/compare/v3.3.7...v3.3.8)

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

js/package-lock.json

@@ -9019,9 +9019,9 @@
       }
     },
     "webpack-cli": {
-      "version": "3.3.7",
-      "resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-3.3.7.tgz",
-      "integrity": "sha512-OhTUCttAsr+IZSMVwGROGRHvT+QAs8H6/mHIl4SvhAwYywjiylYjpwybGx7WQ9Hkb45FhjtsymkwiRRbGJ1SZQ==",
+      "version": "3.3.8",
+      "resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-3.3.8.tgz",
+      "integrity": "sha512-RANYSXwikSWINjHMd/mtesblNSpjpDLoYTBtP99n1RhXqVI/wxN40Auqy42I7y4xrbmRBoA5Zy5E0JSBD5XRhw==",
       "dev": true,
       "requires": {
         "chalk": "2.4.2",

js/package.json

@@ -41,7 +41,7 @@
     "vue-style-loader": "^4.1.2",
     "vue-template-compiler": "^2.6.10",
     "webpack": "^4.39.3",
-    "webpack-cli": "^3.3.7",
+    "webpack-cli": "^3.3.8",
     "webpack-merge": "^4.2.2"
   },
   "scripts": {