Bump webpack-stream from 5.2.1 to 6.0.0

Bumps [webpack-stream](https://github.com/shama/webpack-stream) from 5.2.1 to 6.0.0.
- [Release notes](https://github.com/shama/webpack-stream/releases)
- [Commits](shama/webpack-stream@v5.2.1...v6.0.0)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -14,7 +14,7 @@
     "gulp-uglify": "^3.0.2",
     "webpack": "^4.44.1",
     "webpack-cli": "^3.3.12",
-    "webpack-stream": "^5.2.1"
+    "webpack-stream": "^6.0.0"
   },
   "dependencies": {
     "jquery-validation": "^1.19.2",