Bump webpack-bundle-tracker to 1.5.0

Signed-off-by: Carlos Coelho <carlos@vinta.com.br>

Author: chocoelho

tests/package.json

@@ -15,7 +15,7 @@
     "react": "^16.0.0",
     "webpack": "^4.0.0",
     "compression-webpack-plugin": "^6.1.1",
-    "webpack-bundle-tracker": "1.4.0",
+    "webpack-bundle-tracker": "1.5.0",
     "webpack-cli": "^3.3.10",
     "webpack-dev-server": "^3.0.0"
   }