fix(deps): update dependency next-themes to ^0.3.0

Author: renovate[bot]

package.json

@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "next": "^13.3.2",
-    "next-themes": "^0.2.1",
+    "next-themes": "^0.3.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "showdown": "^1.9.1",