Bump cssnano from 8.0.1 to 8.0.2

Bumps [cssnano](https://github.com/cssnano/cssnano) from 8.0.1 to 8.0.2.
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/cssnano@8.0.1...cssnano@8.0.2)

---
updated-dependencies:
- dependency-name: cssnano
  dependency-version: 8.0.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package.json

@@ -12,7 +12,7 @@
   "devDependencies": {
     "@lodder/grunt-postcss": "3.1.1",
     "autoprefixer": "10.5.0",
-    "cssnano": "8.0.1",
+    "cssnano": "8.0.2",
     "grunt": "1.6.2",
     "grunt-cli": "1.5.0",
     "grunt-concurrent": "3.0.0",