fix: upgrade react-three-fiber from 5.3.19 to 5.3.21 (#1)

Snyk has created this PR to upgrade react-three-fiber from 5.3.19 to 5.3.21.

See this package in npm:
https://www.npmjs.com/package/react-three-fiber

See this project in Snyk:
https://app.snyk.io/org/ctrlaltdev/project/3f912a3d-5ea7-4368-b887-fc4a4c9017aa?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -37,7 +37,7 @@
     "react": "^17.0.1",
     "react-dom": "^17.0.1",
     "react-scripts": "^4.0.3",
-    "react-three-fiber": "^5.3.19",
+    "react-three-fiber": "^5.3.21",
     "three": "^0.126.1"
   }
 }