fix: update dependencies

Author: pine

package.json

@@ -26,7 +26,7 @@
     "karma-mocha": "^1.1.1",
     "karma-mocha-reporter": "^2.0.4",
     "karma-sourcemap-loader": "^0.3.7",
-    "karma-webpack": "4.0.0-rc.3",
+    "karma-webpack": "^4.0.2",
     "mocha": "^6.0.0",
     "npm-run-all": "^4.1.2",
     "text-encoding": "^0.7.0",