fix: upgrade classnames from 2.3.1 to 2.5.1

Snyk has created this PR to upgrade classnames from 2.3.1 to 2.5.1.

See this package in npm:
https://www.npmjs.com/package/classnames

See this project in Snyk:
https://app.snyk.io/org/nexuscompute/project/33e3a212-a8a9-48d6-9a7e-b770dfdeb673?utm_source=github&utm_medium=referral&page=upgrade-pr

examples/cms-ghost/package.json

@@ -7,7 +7,7 @@
   },
   "dependencies": {
     "@tryghost/content-api": "^1.4.13",
-    "classnames": "2.3.1",
+    "classnames": "2.5.1",
     "date-fns": "2.28.0",
     "lazysizes": "^5.3.0",
     "next": "latest",