chore(deps): update dependency log4js to 6.4.0 [security]

Author: renovate-bot

package-lock.json

@@ -84,7 +84,7 @@
   },
   "devDependencies": {
     "@hot-loader/react-dom": "17.0.0",
-    "@stryker-mutator/core": "4.0.0",
+    "@stryker-mutator/core": "5.6.1",
     "@stryker-mutator/javascript-mutator": "4.0.0",
     "@stryker-mutator/jest-runner": "4.0.0",
     "@testing-library/cypress": "7.0.1",