Fixes for dependabot alerts on multiple deps

Author: edro15

appserver/static/visualizations/boxplot/package-lock.json

@@ -11,7 +11,8 @@
   "author": "Splunk",
   "license": "MIT",
   "devDependencies": {
-    "webpack": "^3.6.0"
+    "webpack": "^5.0.0",
+    "webpack-cli": "^4.10.0"
   },
   "dependencies": {
     "d3": "^7.0.1",