Bump Immer to fix potential security issue

Summary:
Immer had security issues. Noobs.

Only the patches feature was affected, which at this moment isn't used by any known plugin, but just in case.

Reviewed By: passy

Differential Revision: D25993961

fbshipit-source-id: 9bfe7065c90865d912ebcfd14c1117697bf714f7

desktop/flipper-plugin/package.json

@@ -11,7 +11,7 @@
   "dependencies": {
     "@emotion/css": "^11.0.0",
     "@emotion/react": "^11.1.1",
-    "immer": "^8.0.0",
+    "immer": "^8.0.1",
     "react-element-to-jsx-string": "^14.3.2"
   },
   "devDependencies": {