Bump clean-css-cli from 5.5.0 to 5.5.2

Bumps [clean-css-cli](https://github.com/clean-css/clean-css-cli) from 5.5.0 to 5.5.2.
- [Release notes](https://github.com/clean-css/clean-css-cli/releases)
- [Changelog](https://github.com/clean-css/clean-css-cli/blob/master/History.md)
- [Commits](clean-css/clean-css-cli@v5.5.0...v5.5.2)

---
updated-dependencies:
- dependency-name: clean-css-cli
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -7,7 +7,7 @@
     "bootstrap": "^5.0.0",
     "bootstrap-dark-5": "^1.0.1",
     "bootstrap-icons": "^1.4.0",
-    "clean-css-cli": "^5.4.1",
+    "clean-css-cli": "^5.5.2",
     "copyfiles": "^2.4.0",
     "eslint": "^8.1.0",
     "npm-run-all": "^4.1.5",