Update dependency final-form to ^4.20.9

Signed-off-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -64,7 +64,7 @@
   },
   "dependencies": {
     "@material-ui/core": "^4.12.4",
-    "final-form": "^4.20.8",
+    "final-form": "^4.20.9",
     "lodash": "^4.17.21",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",