Updated all packages and fixed errors thrown by new ESLint

client/src/components/alert/alert.component.test.js

@@ -1,17 +1,13 @@
+import { shallow } from "enzyme";
 import React from "react";
-import ReactDOM from "react-dom";
 import Alert from "./alert.component";
-import { MockedProvider } from "@apollo/react-testing";
-import { shallow, mount } from "enzyme";
-
-const div = document.createElement("div");
 
 describe("Alert component", () => {
   let wrapper;
   beforeEach(() => {
     const mockProps = {
       type: "error",
-      message: "Test error message."
+      message: "Test error message.",
     };
 
     wrapper = shallow(<Alert {...mockProps} />);