Update dependency multer to v1.4.3

Author: renovate-bot

package-lock.json

@@ -52,7 +52,7 @@
     "eslint-plugin-react": "7.23.2",
     "express": "4.17.1",
     "jest": "26.6.3",
-    "multer": "1.4.2",
+    "multer": "1.4.3",
     "npm-run-all": "4.1.5",
     "prettier": "2.3.0",
     "redux": "4.1.0",