build(deps): bump gulp.spritesmith from 6.12.1 to 6.13.0 (#14041)

Bumps [gulp.spritesmith](https://github.com/twolfson/gulp.spritesmith) from 6.12.1 to 6.13.0.
- [Release notes](https://github.com/twolfson/gulp.spritesmith/releases)
- [Changelog](https://github.com/twolfson/gulp.spritesmith/blob/master/CHANGELOG.md)
- [Commits](https://github.com/twolfson/gulp.spritesmith/compare/6.12.1...6.13.0)

---
updated-dependencies:
- dependency-name: gulp.spritesmith
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -36,7 +36,7 @@
     "gulp-babel": "^8.0.0",
     "gulp-imagemin": "^7.1.0",
     "gulp-nodemon": "^2.5.0",
-    "gulp.spritesmith": "^6.12.1",
+    "gulp.spritesmith": "^6.13.0",
     "habitica-markdown": "^3.0.0",
     "helmet": "^4.6.0",
     "image-size": "^1.0.1",