Bump pixi.js from 4.3.0 to 8.1.1

Bumps [pixi.js](https://github.com/pixijs/pixijs) from 4.3.0 to 8.1.1.
- [Release notes](https://github.com/pixijs/pixijs/releases)
- [Commits](pixijs/pixijs@v4.3.0...v8.1.1)

---
updated-dependencies:
- dependency-name: pixi.js
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -17,7 +17,7 @@
   "author": "James Cote",
   "license": "MIT",
   "dependencies": {
-    "pixi.js": "4.3.0"
+    "pixi.js": "8.1.1"
   },
   "devDependencies": {
     "copy-webpack-plugin": "^11.0.0",