Bump imagemin-pngquant from 8.0.0 to 9.0.2

Bumps [imagemin-pngquant](https://github.com/imagemin/imagemin-pngquant) from 8.0.0 to 9.0.2.
- [Release notes](https://github.com/imagemin/imagemin-pngquant/releases)
- [Commits](imagemin/imagemin-pngquant@v8.0.0...v9.0.2)

---
updated-dependencies:
- dependency-name: imagemin-pngquant
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -50,7 +50,7 @@
     "imagemin-jpegtran": "^6.0.0",
     "imagemin-mozjpeg": "^8.0.0",
     "imagemin-optipng": "^8.0.0",
-    "imagemin-pngquant": "^8.0.0",
+    "imagemin-pngquant": "^9.0.2",
     "imagemin-svgo": "^9.0.0",
     "lodash.clonedeep": "^4.5.0",
     "micromatch": "^4.0.2",