housekeeping(deps): redux-immutable v4 (#5639)

package-lock.json

@@ -14825,12 +14825,9 @@
       }
     },
     "redux-immutable": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/redux-immutable/-/redux-immutable-3.1.0.tgz",
-      "integrity": "sha1-yvvWhuBxEmERm5wolgk13EeknQo=",
-      "requires": {
-        "immutable": "^3.8.1"
-      }
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/redux-immutable/-/redux-immutable-4.0.0.tgz",
+      "integrity": "sha1-Ohoy32Y2ZGK2NpHw4dw15HK7yfM="
     },
     "regenerate": {
       "version": "1.4.0",

package.json

@@ -75,7 +75,7 @@
     "react-motion": "^0.5.2",
     "react-redux": "^4.x.x",
     "redux": "^4.0.0",
-    "redux-immutable": "3.1.0",
+    "redux-immutable": "4.0.0",
     "remarkable": "^1.7.4",
     "reselect": "^2.5.4",
     "serialize-error": "^2.1.0",