build(deps): bump cssnano-preset-default from 5.2.12 to 6.0.1

Bumps [cssnano-preset-default](https://github.com/cssnano/cssnano) from 5.2.12 to 6.0.1.
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/cssnano-preset-default@5.2.12...cssnano-preset-default@6.0.1)

---
updated-dependencies:
- dependency-name: cssnano-preset-default
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

plugins/cssnano/package.json

@@ -27,7 +27,7 @@
   },
   "dependencies": {
     "cssnano": "^5.1.13",
-    "cssnano-preset-default": "^5.2.12",
+    "cssnano-preset-default": "^6.0.1",
     "magefront-plugin-postcss": "workspace:~"
   },
   "devDependencies": {