Update dependency file-loader to v6.2.0

Author: renovate-bot

package.json

@@ -107,7 +107,7 @@
     "eslint-plugin-prettier": "3.1.4",
     "eslint-plugin-react": "7.21.5",
     "eslint-watch": "7.0.0",
-    "file-loader": "6.1.0",
+    "file-loader": "6.2.0",
     "koa-connect": "2.1.0",
     "html-webpack-plugin": "4.5.0",
     "script-ext-html-webpack-plugin": "2.1.4",