yarn: Upgrade packages

- babel: 7.13
- material-ui: 4.11
- prettier: 2.2
- react-admin: 3.14

Change-Id: I26ab6d9d75110f3522282b83cd1131af98b8c43c

package.json

@@ -19,14 +19,15 @@
     "eslint-config-prettier": "^6.10.1",
     "eslint-plugin-prettier": "^3.1.2",
     "jest-fetch-mock": "^3.0.3",
-    "prettier": "^2.0.0"
+    "prettier": "^2.0.0",
+    "ra-test": "^3.14.0"
   },
   "dependencies": {
     "papaparse": "^5.2.0",
     "prop-types": "^15.7.2",
     "ra-language-german": "^2.1.2",
-    "react": "^16.13.1",
-    "react-admin": "^3.10.0",
+    "react": "^17.0.0",
+    "react-admin": "^3.14.0",
     "react-dom": "^16.14.0",
     "react-scripts": "^3.4.4"
   },

src/App.test.js

@@ -1,5 +1,5 @@
 import React from "react";
-import { TestContext } from "react-admin";
+import { TestContext } from "ra-test";
 import { shallow } from "enzyme";
 import App from "./App";
 

src/components/LoginPage.test.js

@@ -1,5 +1,5 @@
 import React from "react";
-import { TestContext } from "react-admin";
+import { TestContext } from "ra-test";
 import { shallow } from "enzyme";
 import LoginPage from "./LoginPage";