Update JSONForms to 2.4.0

Author: TheZoker

package-lock.json

@@ -3,9 +3,9 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@jsonforms/core": "^2.3.2",
-    "@jsonforms/material-renderers": "^2.3.2",
-    "@jsonforms/react": "^2.3.2",
+    "@jsonforms/core": "^2.4.0",
+    "@jsonforms/material-renderers": "^2.4.0",
+    "@jsonforms/react": "^2.4.0",
     "@material-ui/core": "^4.7.0",
     "@material-ui/icons": "^4.5.1",
     "@types/jest": "^24.0.23",
@@ -41,4 +41,4 @@
     "not ie <= 11",
     "not op_mini all"
   ]
-}
+}