fix: upgrade karma-webpack from 4.0.0-rc.3 to 4.0.2 (#1625)

Snyk has created this PR to upgrade karma-webpack from 4.0.0-rc.3 to 4.0.2.

See this package in NPM:
https://www.npmjs.com/package/karma-webpack

See this project in Snyk:
https://app.snyk.io/org/walmart-poc/project/e7b3043f-4c2b-4456-a67b-1d822d9b52ab?utm_source=github&utm_medium=upgrade-pr

packages/electrode-archetype-opt-karma/package.json

@@ -44,7 +44,7 @@
     "karma-sonarqube-unit-reporter": "0.0.21",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-spec-reporter": "0.0.32",
-    "karma-webpack": "4.0.0-rc.3",
+    "karma-webpack": "4.0.2",
     "karma": "^3.1.1",
     "mocha": "^4.0.0",
     "sinon-chai": "^2.14.0",