fix: upgrade clean-css from 5.3.1 to 5.3.2

Snyk has created this PR to upgrade clean-css from 5.3.1 to 5.3.2.

See this package in npm:
https://www.npmjs.com/package/clean-css

See this project in Snyk:
https://app.snyk.io/org/mystikfluu/project/c5b23892-809c-4121-9c2f-67962c7a4953?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "body-parser": "^1.20.1",
-    "clean-css": "^5.3.1",
+    "clean-css": "^5.3.2",
     "compression": "^1.7.4",
     "cookie-parser": "^1.4.6",
     "ejs": "^3.1.8",