chore: bump pixi.js from 5.3.12 to 8.1.3

Bumps [pixi.js](https://github.com/pixijs/pixijs) from 5.3.12 to 8.1.3.
- [Release notes](https://github.com/pixijs/pixijs/releases)
- [Commits](pixijs/pixijs@v5.3.12...v8.1.3)

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

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