chore: bump version to 2.18.1 and update AppBreadcrumbs component (#386)

- Incremented application version from 2.18.0 to 2.18.1 in package.json.
- Refactored AppBreadcrumbs component to use Next.js Link for improved navigation.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "next-supabase-saas-kit-turbo",
-  "version": "2.18.0",
+  "version": "2.18.1",
   "private": true,
   "sideEffects": false,
   "engines": {