Bump webpack-cli from 3.3.8 to 3.3.9 in /js

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 3.3.8 to 3.3.9.
- [Release notes](https://github.com/webpack/webpack-cli/releases)
- [Changelog](https://github.com/webpack/webpack-cli/blob/v3.3.9/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-cli/compare/v3.3.8...v3.3.9)

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

js/package-lock.json

@@ -9026,9 +9026,9 @@
       }
     },
     "webpack-cli": {
-      "version": "3.3.8",
-      "resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-3.3.8.tgz",
-      "integrity": "sha512-RANYSXwikSWINjHMd/mtesblNSpjpDLoYTBtP99n1RhXqVI/wxN40Auqy42I7y4xrbmRBoA5Zy5E0JSBD5XRhw==",
+      "version": "3.3.9",
+      "resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-3.3.9.tgz",
+      "integrity": "sha512-xwnSxWl8nZtBl/AFJCOn9pG7s5CYUYdZxmmukv+fAHLcBIHM36dImfpQg3WfShZXeArkWlf6QRw24Klcsv8a5A==",
       "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": "^4.40.2",
-    "webpack-cli": "^3.3.8",
+    "webpack-cli": "^3.3.9",
     "webpack-merge": "^4.2.2"
   },
   "scripts": {