fix: superset-frontend/temporary_superset_ui/superset-ui/package.json…

… to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-DECODEURICOMPONENT-3149970
- https://snyk.io/vuln/SNYK-JS-UNSETVALUE-2400660

superset-frontend/temporary_superset_ui/superset-ui/package.json

@@ -131,10 +131,10 @@
     "ts-jest": "^26.4.2",
     "ts-loader": "^8.0.7",
     "typescript": "^4.1.2",
-    "webpack": "^4.42.0",
+    "webpack": "^5.0.0",
     "webpack-bundle-analyzer": "^3.6.1",
     "webpack-cli": "^3.3.11",
-    "webpack-dev-server": "^3.11.0",
+    "webpack-dev-server": "^4.0.0",
     "webpack-manifest-plugin": "^2.2.0",
     "webpack-sources": "^1.4.3",
     "yargs": "^15.4.1"