fix(deps): update dependency @react-three/fiber to v8 (#2114)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Josh <[email protected]>

Author: renovate[bot]

demo/src/sandboxes/springy-boxes/package.json

@@ -10,7 +10,7 @@
   ],
   "main": "src/index.js",
   "dependencies": {
-    "@react-three/fiber": "7.0.29",
+    "@react-three/fiber": "8.12.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-scripts": "5.0.1",

demo/src/sandboxes/webgl-switch/package.json

@@ -14,7 +14,7 @@
     "@react-spring/three": "*",
     "@react-spring/web": "*",
     "@react-three/drei": "8.20.2",
-    "@react-three/fiber": "7.0.29",
+    "@react-three/fiber": "8.12.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-scripts": "5.0.1",